A barrage of at least 22 Russian missiles targeted Ukraine overnight, with at least one striking the capital, Kyiv, in what the Ukrainian minister of energy called a “massive” attack on energy infrastructure.

Russia also fired overnight at least 460 drones, several of which flew into either Moldova or Romania, Ukrainian President Volodymyr Zelenskyy said early on Tuesday.

“That is why all partners must not forget that every day lives need to be saved,” Zelenskyy said on social media. “Weapons and air defense are important, just as important is the sanction pressure on the aggressor.

Six people were killed and another 13 were injured in Ukraine, Zelenskyy said. Kyiv Mayor Vitali Klitschko earlier said two people were killed and seven others were injured.

The missile-and-drone attack followed negotiations in Switzerland over the weekend on a United States-proposed Russia-Ukraine peace plan. The strike also followed a secret meeting on Monday between U.S. Army Secretary Dan Driscoll and a Russian delegation in Abu Dhabi, a U.S. official told ABC News.

“Last night, Russia launched another attack – at a time when Ukraine, together with America, Europe, and many others around the world, are working virtually around the clock to stop the bloodshed,” Zelenskyy said on social media.

Residents of the Ukrainian capital were urged to take shelter as air-raid alerts blared.

“And so this night we spend in bombshelters, listening how the missiles rain down on Kyiv,” Kira Rudik, a member of Ukrainian parliament, said on social media. “This is russia’s response to peace negotiations.”

Some areas were experiencing disruptions to power and water, the Klitschko said. A residential building in one area of the city was on fire after debris hit it, he said.

“The enemy attack on Kyiv is ongoing,” Klitschko said in a post to Telegram early Tuesday local time.

Military officials in Ukraine said 438 drones and 14 missiles were destroyed or otherwise didn’t hit their targets. Missile hits and 26 strike drones were recorded impacting across 15 locations, with falling debris reported at 12 locations.

Zelenskyy said Monday said negotiators were were working toward peace “as quickly as possible.” Though he warned Ukrainians that “Russia will not ease its pressure on Ukraine.”

“In these days and weeks, it is essential to take air raid alerts and all similar strike threats very seriously,” he said on X. “We clearly understand whom we are dealing with, and all necessary orders have been issued within the Air Force and across all other components of Ukraine’s Defense and Security Forces. We will react.”

The strikes on Kyiv come a day after Russia launched over 160 drones into the country, Ukraine’s air force said.

Air defenses shot down or suppressed 125 drones, the air force said, with 37 craft impacting across 15 locations. At least four people were killed in Ukraine’s northeastern city of Kharkiv in the attack, the local mayor said.

Officials in Moldova said in a statement that 11 Russian drones entered their airspace overnight into Tuesday morning, one of which fell on a house in the northeast of the country.

Another two entered Romania, which is a NATO member, officials there said. In Romania, two German Typhoons and two Romanian F-16s were scrambled.

A Romanian Defense Ministry spokesperson told ABC News that one drone crashed in the country’s eastern Vaslui County.

It was not immediately clear if the drones were Shahed-style attack drones.

Andrii Sybiha, Ukraine’s minister of foreign affairs, decried the drone intrusions, saying on social media that they amounted to “yet another reminder that Russian aggression directly threatens not only Ukraine but also other European nations and the transatlantic community as a whole.”

“We stand in solidarity with our Odesa Triangle partners, Romania and Moldova, and condemn these reckless Russian actions,” he added.

ABC News’ David Brennan and Joe Simonetti contributed to this report.

By SAMYA KULLAB, Associated Press

KYIV, Ukraine (AP) — Ukrainian President Volodymyr Zelenskyy says his reportedly tense meeting with U.S President Donald Trump last week was “positive” — even though he did not secure the Tomahawk missiles for Ukraine — and emphasized what he said is continued American interest in economic deals with Kyiv.

Zelenskyy said Trump reneged on the possibility of sending the long-range missiles to Ukraine, which would have been a major boost for Kyiv, following his phone call with Russian President Vladimir Putin hours before the Ukrainian leader and American president were to meet on Friday.

North Korean leader Kim Jong Un supervised the test-firing of two types of new antiair missiles, state media said Sunday, displaying his expanding military capabilities as the South Korean and U.S. militaries carry out joint drills.

The North’s official Korean Central News Agency said the test Saturday proved the missiles effective in countering aerial threats such as drones and cruise missiles, and that Kim assigned unspecified “important” tasks to defense scientists ahead of a major political conference expected early next year.

The report did not specify the missiles that were tested or where the event took place. It did not mention any remarks by Kim directed at Washington or Seoul.

The test coincided with new South Korean President Lee Jae Myung ‘s trip to Tokyo for a summit with Japanese Prime Minister Shigeru Ishiba, where they vowed to strengthen bilateral cooperation and their trilateral partnership with the United States to address common challenges, including North Korea’s nuclear ambitions. Lee was to depart for Washington on Sunday for a summit with President Trump.

Kim’s government has repeatedly dismissed calls by Seoul and Washington to restart long-stalled negotiations aimed at winding down his nuclear weapons and missiles programs, as he continues to prioritize Russia as part of a foreign policy aimed at expanding ties with nations confronting the United States.

Since Russia’s invasion of Ukraine, Kim has sent thousands of troops and large shipments of weapons, including artillery and ballistic missiles, to help fuel President Vladimir Putin’s warfighting.

That has raised concerns Moscow could provide technology that strengthens Kim’s nuclear-armed military, with experts pointing to North Korea’s aging antiair and radar systems as a likely area of cooperation.

South Korea’s previous conservative government said in November that Russia supplied missiles and other equipment to help strengthen air defenses of the North Korean capital of Pyongyang, but did not specify which systems were provided.

Kim held a ceremony in Pyongyang last week to honor North Korean soldiers who fought in Ukraine, awarding state “hero” titles to those who returned and placing medals beside 101 portraits of the fallen, praising them as “great men, great heroes and great patriots,” state media reported.

According to South Korean assessments, North Korea has sent around 15,000 troops to Russia since last fall and about 600 of them have died in combat. Kim has also agreed to send thousands of military construction workers and deminers to Russia’s Kursk region, a deployment South Korean intelligence believes could happen soon.

Iran launched another missile barrage on Israel Saturday night local time, a day after Israel began a series of blistering attacks on Iranian nuclear and military sites. The Israel-Iran exchange of fire comes as nuclear talks slated to take place Sunday in Oman between the U.S. and Iran were called off, sources told CBS News.

Both Israel’s military and Iran state television announced the latest round of missiles as explosions were heard overhead in parts of Israel, including Tel Aviv, less than an hour before midnight Saturday local time. Fire officials reported a collapsed building in the north. Neighboring Jordan said it closed its airspace.

Israel’s military quickly noted that it was currently striking “military targets” in Tehran, where witnesses said they heard at least two strong explosions, in the city’s northeast and western areas.

Lt. Col. Nadav Shoshani, an Israel Defense Forces spokesperson, posted to social media late Saturday night that “while the IDF is operating to intercept missiles launched from Iran,” the Israeli Air Force “is currently striking military targets in Tehran.”

Israel’s ongoing “widespread strikes” in Tehran and elsewhere have left Iran’s surviving leadership with the difficult decision of whether to plunge deeper into conflict with Israel’s more powerful forces or seek a diplomatic route.

Oman’s foreign minister, Badr al-Busaidi, said on social media that the sixth round of indirect nuclear talks on Sunday “will not now take place.” 

Israel — widely believed to be the only nuclear-armed state in the Middle East — said its hundreds of strikes on Iran over the past two days killed a number of top generals, nine senior scientists and experts involved in Iran’s nuclear program. Iran’s U.N. ambassador has said 78 people were killed and more than 320 wounded.

Iran retaliated for a second night Saturday as explosions lit the night skies over Jerusalem and Tel Aviv. Israel said three people were killed overnight into Saturday in the first attack, and over 170 were wounded.

Israeli defense minister warns “Tehran will burn” if Iranian retaliatory strikes continue

Meanwhile, Israel’s defense minister warned Saturday that “Tehran will burn” if Iran continues firing missiles at Israel. 

Speaking after an assessment meeting with the army’s chief of staff, Defense Minister Israel Katz said Iran will pay a heavy price for harming Israeli citizens. At least three people have died in Israel, and dozens were wounded, Israel Defense Forces officials said Saturday morning.

“If (Iranian Supreme Leader Ayatollah Ali) Khamenei continues to fire missiles at the Israeli home front — Tehran will burn,” Katz said.

Israeli Prime Minister Benjamin Netanyahu confirmed the three civilian deaths in an address Saturday, saying he shares the grief with the families but the nation is thwarting “a double threat” from Iran — nuclear and ballistic missiles — to destroy the State of Israel. He said Israel’s strikes had “inflicted very severe damage on Iran’s central enrichment site.”

An Israeli military official said Saturday that the military was poised to carry out more strikes in Iran, saying, “This is not over.” He spoke on condition of anonymity, in line with official procedures.

Israel’s initial assault used warplanes — as well as drones smuggled into the country in advance, according to officials — to hit key facilities and kill top generals and scientists. 

“The individuals who were eliminated played a central part of the progress toward nuclear weapons,” the IDF said in a news release. “Their elimination represents a significant blow to the Iranian regime’s ability to acquire weapons of mass destruction.” 

Iran retaliated by launching waves of drones and ballistic missiles at Israel, where explosions lit the night skies over Jerusalem and Tel Aviv and shook the buildings below. The Israeli military urged civilians, already rattled by 20 months of war in Gaza sparked by Hamas’ Oct. 7 attack, to head to shelter for hours. U.S. officials confirmed to CBS News that U.S. forces helped Israel intercept Iranian missiles on Friday. 

Both Israel and Iran said their attacks would continue, raising the prospect of another protracted Mideast conflict. Netanyahu said Friday that his objective was to eliminate any Iranian threat to Israel, but he also urged Iranians to rise up against their leaders. Israel would welcome the government’s overthrow even if it is not actively seeking it.

“The time has come for you to unite around your flag and your historic legacy, by standing up for your freedom from an evil and oppressive regime,” Netanyahu said Friday. “It has never been weaker. This is your opportunity to stand up and let your voices be heard.” 

Strikes could derail U.S.-Iran nuclear talks 

Israel’s ongoing strikes have halted — for now — diplomacy between the U.S. and Iran. Oman’s foreign minister, Badr al-Busaidi, said on social media that talks on Sunday “will not now take place,” but he added that “diplomacy and dialogue remain the only pathway to lasting peace.”

A senior administration officials told CBS News, “While there will be no meeting Sunday, we remain committed to talks and hope the Iranians will come to the table soon.”

Secretary of State Marco Rubio has said the U.S. was not involved in Israel’s initial strike, and that his top priority is protecting American assets in the Middle East. The State Department on Thursday informed multiple U.S.-allied governments in the Middle East in advance of Israel’s strikes on Iran, four sources told CBS News.

President Trump urged Iran on Friday to reach a deal with the U.S. on its nuclear program, warning on his Truth Social platform that Israel’s attacks “will only get worse.”

“Iran must make a deal, before there is nothing left,” he wrote.

Will Todman, the chief of staff of the Geopolitics and Foreign Policy Department and a senior fellow in the Middle East Program at the Center for Strategic and International Studies, told CBS News that Mr. Trump has “put a lot of effort into the nuclear negotiations with Iran,” but “seems to have grown frustrated with the lack of success in those talks.” 

“The Iranians tend to negotiate very slowly. And be very slow to make concessions,” Todman said. “And so I think he’s now viewing these military actions by Israel as a way of increasing pressure on Iran to make those concessions and ultimately come to a deal.”

Iran’s first round of missile strikes on Israel

Khamenei said in a recorded message Friday: “We will not allow them to escape safely from this great crime they committed.”

Iran launched waves of missiles at Israel late Friday and early Saturday. Iranians awoke Saturday to state television airing repeated clips of strikes on Israel, as well as videos of people cheering and handing out sweets. Israel’s military said more drones were intercepted near the Dead Sea early Saturday.

A hospital in Tel Aviv treated seven people wounded in the second Iranian barrage; all but one of them had light injuries. Israel’s Fire and Rescue Services said they were wounded when a projectile hit a building in the city. A spokesperson for Beilinson Hospital said one woman was killed.

Hours later, an Iranian missile struck near homes in the central Israeli city of Rishon Lezion, killing two more people and wounding 19, according to Israel’s paramedic service Magen David Adom. Israel’s Fire and Rescue service said four homes were severely damaged.

Israel’s main international airport said Saturday it will remain closed until further notice.

Meanwhile, the sound of explosions and Iranian air defense systems firing at targets echoed across central Tehran shortly after midnight. Iran’s semiofficial Tasnim news agency reported a fire at Tehran’s Mehrabad International Airport. A video posted on X showed a column of smoke and flames rising from what the outlet said was the airport.

The Israeli military said it carried out overnight strikes on dozens of targets, including air defenses, “in the area of Tehran.”

Israel’s paramedic services said 34 people were wounded in the barrage on the Tel Aviv area, including a woman who was critically injured after being trapped under rubble. In Ramat Gan, east of Tel Aviv, an AP journalist saw burned-out cars and at least three damaged houses, including one where the front was nearly entirely torn away.

Residents of a central Israeli city that was hit Friday night told the AP the explosion was so powerful it shook their shelter door open. “We thought, that’s it, the house is gone, and in fact half of the house was gone, it fell apart,” said Moshe Shani.

U.S. ground-based air defense systems in the region were helping to shoot down Iranian missiles, said a U.S. official who spoke on condition of anonymity to discuss the measures.

Israel’s ongoing airstrikes and Iran’s retaliation raised concerns about all-out war between the countries and propelled the region, already on edge, into even greater upheaval. Israel’s 20-month-long war with Gaza shows no signs of ending. At least 27 people were killed by Israeli strikes in Gaza overnight Friday, according to local hospitals.

Strikes raise fears of all-out war

Countries in the region condemned Israel’s attack, while leaders around the globe called for immediate de-escalation from both sides.

Israel had long threatened such a strike, and successive American administrations sought to prevent it, fearing it would ignite a wider conflict across the Middle East and possibly be ineffective at destroying Iran’s dispersed and hardened nuclear program.

But a confluence of developments triggered by Hamas’ Oct. 7, 2023, attack — plus the reelection of Mr. Trump — created the conditions that allowed Israel to finally follow through on its threats. Netanyahu said the U.S. was informed in advance of the attack.

On Thursday, Iran was censured by the U.N.’s atomic watchdog for not complying with obligations meant to prevent it from developing a nuclear weapon.

Above-ground section of Natanz facility destroyed

Among the key sites Israel attacked was Iran’s main nuclear enrichment facility in Natanz, where black smoke could be seen rising into the air. It also appeared to strike a second, smaller nuclear enrichment facility in Fordo, about 60 miles southeast of Tehran, according to an Iranian news outlet close to the government that reported hearing explosions nearby.

Israel said it also struck a nuclear research facility in Isfahan, and said it destroyed dozens of radar installations and surface-to-air missile launchers in western Iran. Iran confirmed the strike at Isfahan.

U.N. nuclear chief Rafael Grossi told the Security Council that the above-ground section of the Natanz facility was destroyed. The main centrifuge facility underground did not appear to have been hit, but the loss of power could have damaged the infrastructure there, he said.

Netanyahu said the attack had been months in the making and was planned for April before being postponed.

Israel’s Mossad spy agency positioned explosive drones and precision weapons inside Iran ahead of time, and used them to target Iranian air defenses and missile launchers near Tehran, according to two security officials who spoke on condition of anonymity.

It was not possible to independently corroborate those claims.

Over the past year, Israel has been targeting Iran’s air defenses, hitting a radar system for a Russian-made air defense battery in April 2024, and surface-to-air missile sites and missile manufacturing facilities in October.

The first wave of strikes gave Israel “significant freedom of movement” in Iran’s skies, clearing the way for further attacks, according to an Israeli military official who spoke on condition of anonymity because he was not authorized to discuss details of the attack with the media.

The official said Israel is prepared for an operation that could last up to two weeks, but that there was no firm timeline.

Among those killed were three of Iran’s top military leaders: one who oversaw the entire armed forces, Gen. Mohammad Bagheri; one who led the paramilitary Revolutionary Guard, Gen. Hossein Salami; and the head of the Guard’s ballistic missile program, Gen. Amir Ali Hajizadeh.

Two of Bagheri’s deputies were also killed, Iran confirmed Saturday: Gen. Gholamreza Mehrabi, the deputy of intelligence for the armed forces’ general staff, and Gen. Mehdi Rabbani, the deputy of operations.

On Saturday, Khamenei named a new leader for the Revolutionary Guard’s aerospace division. Gen. Majid Mousavi will replace Gen. Amir Ali Hajizadeh, who was killed in Friday’s airstrike. The Guard’s aerospace division oversees Iran’s arsenal of ballistic missiles.

Kyiv, Ukraine — Russia launched a “massive” drone and missile attack on Ukrainian energy facilities  Friday, as President Volodymyr Zelenskyy renewed calls for a mutual halt to aerial attacks on critical infrastructure. The call from Zelenskyy to halt aerial bombardments on energy facilities builds on growing rhetoric from Kyiv, Washington and Moscow on halting the war just over three years after it was sparked by Russia’s full-scale invasion.

The Ukrainian leader said the first steps to establishing real peace should be stopping both Russian and Ukrainian aerial and naval attacks. It may have become harder for Ukraine to anticipate and thwart those attacks this week in the wake of President Trump’s decision to pause both intelligence sharing and the provision of military support after a contentious meeting with Zelenskyy a week ago.

“Ukraine is ready to go the way of peace, and it is Ukraine that wants peace from the very first second of this war. The task is to force Russia to stop the war,” he wrote in a post on social media.

The Ukrainian air force said Russia had launched at least 58 missiles and nearly 200 drones, damaging energy facilities across the country from Kharkiv in the east to Ternopil in the west. Firefighters were battling a blaze on streets lined with debris in the Kharkiv region, images released by the emergency services showed.

The Kremlin responded to earlier calls by Zelenskyy for a halt to aerial attacks by ruling out any temporary ceasefire in Ukraine.

Zelenskyy’s allies abroad have voiced support for his truce proposal, which includes elements similar to a vague proposal put forth by France days ago. On Friday, Turkish leader Recep Tayyip Erdogan, who recently hosted the Ukrainian leader, also gave the idea his backing.

“We support the idea of establishing a ceasefire as soon as possible and stopping attacks in the air and at sea as a confidence-building measure between the parties,” Erdogan told an online meeting.

The Russian defense ministry said Friday that it had carried out “precision” strikes on energy infrastructure, claiming the facilities support the Ukrainian military.

Russia is “targeting facilities linked to Ukraine’s military-industrial complex,” Russian President Vladimir Putin’s spokesman Dmitry Peskov said.

The Ukrainian air force said it had deployed French-mad Mirage fighter jets — delivered to Ukraine just last month — for the first time to repel the aerial onslaught. The jets, along with air defense units, shot down 34 of the missiles and 100 drones, the air force said.

DTEK, the largest private energy supplier in Ukraine, said its facilities in the Black Sea region of Odesa were targeted for a fourth night in a row. It said gas facilities in the central Poltava region had “ceased operations” after being struck in the overnight attack.

State gas company Naftogaz also said its production facilities were damaged, without giving details.

Authorities in at least five Ukrainian regions said Russia had targeted energy facilities.

The latest Russian air assault came after EU leaders, shaken by the prospect of U.S. disengagement, agreed to boost the European bloc’s defenses.

Washington, meanwhile, said talks with Kyiv were back on track to secure a ceasefire with Moscow after a public falling out between President Trump and Zelenskyy a week ago. U.S. and Ukrainian officials are expected to meet Tuesday in Saudi Arabia, a senior official in Kyiv told the AFP, with Zelenskyy voicing hope for a “meaningful meeting.”

Zelenskyy himself will travel to Saudi Arabia Monday for talks with Crown Prince Mohammed bin Salman. U.S. envoy Steve Witkoff said he would speak with Ukrainian negotiators about an “initial ceasefire” with Russia and a “framework” for a longer agreement.

Ukraine’s energy minister German Galushchenko said Russia was trying to “hurt ordinary Ukrainians by shelling energy and gas production facilities.”

Eight people were wounded in a strike on Friday on Kharkiv, including a woman pulled from the rubble alive, city officials said.

KYIV, Ukraine — Russia launched a massive aerial attack against Ukraine on Friday, firing 93 missiles and almost 200 drones, Ukrainian President Volodymyr Zelenskyy said, describing it as one of the heaviest bombardments of the country’s energy sector since Russia’s full-scale invasion almost three years ago.

Ukrainian defenses shot down 81 missiles, including 11 cruise missiles that were intercepted by F-16 warplanes provided by Western allies earlier this year, Zelenskyy said.

Russia is “terrorizing millions of people” with such assaults, he said on his Telegram channel, renewing his plea for international unity against Russian President Vladimir Putin.

“A strong reaction from the world is needed: a massive strike – a massive reaction. This is the only way to stop terror,” Zelenskyy said.

But uncertainty surrounds how the war might unfold next year. President-elect Donald Trump, who takes office next month, has vowed to end the war and has thrown into doubt whether vital U.S. military support for Kyiv will continue.

In Moscow, the Defense Ministry said the Russian military used long-range precision missiles and drones on “critically important fuel and energy facilities in Ukraine that ensure the functioning of the military industrial complex.”

The strike was in retaliation for Wednesday’s Ukrainian attack using U.S.-supplied the Army Tactical Missile System, or ATACMs, on a Russian air base, it said.

The U.S. Embassy in Kyiv said Friday’s attack also targeted transport networks and other key facilities.

Ukraine’s biggest private energy company, DTEK, said the attack “seriously damaged” its thermal power plants.

Russia has repeatedly attempted to cripple Ukraine’s electricity system in an effort to break the will of civilians left in the dark with no running water or heating and to disrupt Ukrainian defense manufacturing.

Ukrainian Energy Minister Herman Halushchenko said energy workers were doing everything necessary to “minimize negative consequences for the energy system,” promising to release more details on damages once the security situation allowed it.

Ukraine’s air force reported multiple strike drones launched at Ukraine overnight followed by swarms of cruise missiles in the country’s air space. It said Russia also used air-launched ballistic Kinzhal missiles against Ukraine’s western regions.

A similar massive attack on Nov. 28 involved about 200 missiles and drones and left more than a million households without power until emergency teams restored supplies.

Ukrainian officials have warned that Russia is stockpiling cruise and ballistic missiles for more attacks.

On Nov. 21, Russia for the first time used an intermediate range hypersonic ballistic missile to strike an industrial plant in the city of Dnipro, in eastern Ukraine. Putin described the attack with the Oreshnik missile as retaliation for Ukrainian strikes on Russian territory with longer-range Western weapons.

He declared that more attacks with the new weapon could follow, and U.S. officials warned Wednesday that the Oreshnik could be used again in coming days. There was no immediate sign one was launched in Friday’s attack.

Around half of Ukraine’s energy infrastructure has been destroyed during the war, and rolling electricity blackouts are common and widespread.

Kyiv’s Western allies have provided Ukraine with air defense systems to help it protect critical infrastructure, but Russia has sought to overwhelm the air defenses with combined strikes involving large numbers of missiles and drones called “swarms.”

Russia has held the initiative this year as its military has steadily rammed through Ukrainian defenses in the east in a series of slow but steady offensives.

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Follow AP’s coverage of the war in Ukraine at https://apnews.com/hub/russia-ukraine

BOSTON — BOSTON (AP) — A study that explores the feasibility of using pigeons to guide missiles and one that looks at the swimming abilities of dead fish were among the winners Thursday of this year’s Ig Nobels, the prize for comical scientific achievement.

Held less than a month before the actual Nobel Prizes are announced, the 34th annual Ig Nobel prize ceremony at the Massachusetts Institute of Technology was organized by the Annals of Improbable Research magazine’s website to make people laugh and think. Winners received a transparent box containing historic items related to Murphy’s Law — the theme of the night — and a nearly worthless Zimbabwean $10 trillion bill. Actual Nobel laureates handed the winners their prizes.

“While some politicians were trying to make sensible things sound crazy, scientists discovered some crazy-sounding things that make a lot of sense,” Marc Abrahams, master of ceremonies and editor of the magazine, said in an e-mail interview.

The ceremony started with Kees Moliker, winner of 2003 Ig Noble for biology, giving out safety instructions. His prize was for a study that documented the existence of homosexual necrophilia in mallard ducks.

“This is the duck,” he said, holding up a duck. “This is the dead one.”

After that, someone came on stage wearing a yellow target on their chest and a plastic face mask. Soon, they were inundated with people in the audience throwing paper airplanes at them.

Then, the awards began — several dry presentations which were interrupted by a girl coming on stage and repeatedly yelling “Please stop. I’m bored.” The awards ceremony was also was broken up by an international song competition inspired by Murphy’s Law, including one about coleslaw and another about the legal system.

The winners were honored in 10 categories, including for peace and anatomy. Among them were scientists who showed a vine from Chile imitates the shapes of artificial plants nearby and another study that examined whether the hair on people’s heads in the Northern Hemisphere swirled in the same direction as someone’s hair in the Southern Hemisphere.

Other winners include a group of scientists who showed that fake medicine that causes side effects can be more effective than fake medicine that doesn’t cause side effects and one showing that some mammals are cable of breathing through their anus — winners who came on stage wearing a fish-inspired hats.

Julie Skinner Vargas accepted the peace prize on behalf of her late father B.F. Skinner, who wrote the pigeon-missile study. Skinner Vargas is also the head of the B.F. Skinner Foundation.

“I want to thank you for finally acknowledging his most important contribution,” she said. “Thank you for putting the record straight.”

James Liao, a biology professor at the University of Florida, accepted the physics prize for his study demonstrating and explaining the swimming abilities of a dead trout.

“I discovered that a live fish moved more than a dead fish but not by much,” Liao said, holding up a fake fish. “A dead trout towed behind a stick also flaps its tail to the beat of the current like a live fish surfing on swirling eddies, recapturing the energy in its environment. A dead fish does live fish things.”