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Scientists are sounding the alarm over the spread of bird flu across Antarctica, with a leading Chilean researcher telling AFP Tuesday of an observed strain "capable of killing 100 percent" of infected fauna.

Japanese teenager Ami Nakai put herself in contention for an Olympic medal in her debut senior season as she led superstar teammate Kaori Sakamoto after the Olympic women's short programme on Tuesday.

Serhou Guirassy scored a goal and laid on another as Borussia Dortmund beat Atalanta 2-0 at home on Tuesday in the first leg of their Champions League knockout phase play-off tie.

Vinicius Junior scored a sensational goal to earn Real Madrid a 1-0 Champions League play-off first leg victory at Benfica on Tuesday, although the match was marred by apparent racist abuse aimed at the Brazilian.

Paris Saint-Germain recovered from a shambolic start as Desire Doue inspired a comeback from two goals down to beat Monaco 3-2 in the principality in the first leg of their Champions League knockout phase play-off tie on Tuesday.

Iran said Tuesday it had agreed with the United States in talks in Geneva on "guiding principles" for a deal to avoid conflict, but Vice President JD Vance said Tehran had not yet acknowledged all of Washington's red lines.

A "climate cult" has weighed on Europe's economy, US Energy Secretary Chris Wright told AFP on Tuesday, adding that the United States has shown its allies "tough love" because it wants them to become stronger.

Norwegian freeskier Tormod Frostad soared to gold in an Olympic men's big air final for the ages on Tuesday, finding an extra gear under the most intense pressure at a snow-swept Livigno.

Peru lost its seventh leader in almost as many years Tuesday with the impeachment of interim President Jose Jeri on allegations of graft.

French authorities on Tuesday arrested nine suspects over the killing last week of a far-right activist, including an assistant to a hard-left member of parliament, a prosecutor and an informed source said.

French authorities on Tuesday arrested seven suspects over the killing last week of a far-right activist, including an assistant to a hard-left member of parliament, a prosecutor and an informed source said.

Ukrainian and Russian negotiators concluded the first of two days of US-mediated peace talks in Geneva on Tuesday, though neither side signalled they were any closer to ending Europe's deadliest conflict since World War II.

Norwegian freeskier Tormod Frostad soared to gold in a snow-swept Olympic men's big air final Tuesday, dethroning compatriot and reigning champion Birk Ruud.

Dutch midfielder Noa Lang scored a brace as Galatasaray thumped Juventus 5-2 in a pulsating contest in Istanbul on Tuesday in the first leg of a Champions League playoff.

Tiger Woods says he has no timetable for a return to golf, but the 15-time major champion hasn't ruled out the 2026 Masters even as he ponders the over-50s Champions Tour.

More than 80 film industry figures including Oscar-winning actors Javier Bardem and Tilda Swinton issued a statement on Tuesday slamming the Berlin Film Festival's "silence" on Gaza.

Geneva was abuzz with diplomatic to-and-fro on Tuesday as top US envoys shuttled between two of the biggest events in world news: high-stakes negotiations on Iran's nuclear programme, and tense talks on ending Russia's war in Ukraine.

Prime Minister Mark Carney on Tuesday launched a multi-billion dollar plan to strengthen the Canadian military and rely less on the United States.

The United States is ready to carry out low-yield nuclear tests to match alleged secret explosions by China and Russia, ending a decades-old moratorium, a senior official said Tuesday.

Carlos Alcaraz made a triumphant return to action following his Australian Open triumph as he beat Arthur Rinderknech 6-4, 7-6 (7/5) in the first round in Doha on Tuesday.

Six Russian and four Belarusian athletes will be allowed to compete under their own national flags at the 2026 Paralympics in Milan-Cortina, the Games' governing body confirmed to AFP on Tuesday.

German agrochemical giant Bayer said Tuesday its subsidiary Monsanto had proposed a class settlement of up to $7.25 billion to settle claims that the Roundup weedkiller causes blood cancer, potentially drawing a line under years of costly litigation.

Coco Gauff bounced back from her shock early exit in Doha last week with a comfortable victory over Anna Kalinskaya in Dubai on Tuesday, while Elena Rybakina opened her campaign with a dominant win.

Growing lettuce in the Arctic as a business venture? One Greenland entrepreneur believes in the idea, selling his house to get start-up capital in a gamble he's hoping will pay off.

A man whose teenage son shot dead four people at a US high school has gone on trial in the southern state of Georgia in a rare case of a parent facing charges over a shooting carried out by their child.

Iran and the United States agreed to "a set of guiding principles" laying the groundwork for a broader deal during talks in Geneva on Tuesday, Tehran's top diplomat said, after the leaders of both countries traded warnings of military action.

Warner Bros. Discovery said Tuesday it will give Paramount Skydance a week to sweeten its buyout offer for the storied media giant, as the bidding war with Netflix turned into a bitter battle to win over Warner shareholders.

Six Russian and four Belarusian athletes will be allowed to compete under their own national flags at the 2026 Paralympics in Milan-Cortina, the Games' governing body confirmed to AFP on Tuesday.

Olena Grygorenko has barely left her Chernigiv flat in the past weeks. Every time a blackout hits the city in northern Ukraine, she rushes to her husband's bedside to plug his life support machine into its back-up batteries.

Henry Pollock has been handed his first England start after Steve Borthwick made three changes for Ireland's Six Nations visit to Twickenham on Saturday.

Shares dipped and oil prices dropped back Tuesday as Tehran gave an encouraging response during talks with US officials in Geneva on Iran's nuclear programme, after days of escalating rhetoric from President Donald Trump.

Mikel Arteta believes Arsenal and England "get the benefit" from the friendly rivalry between Bukayo Saka and Noni Madueke as the duo battle to start for both club and country.