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Nearly 3.8 billion people could face extreme heat by 2050 and while tropical countries will bear the brunt cooler regions will also need to adapt, scientists said Monday.

Australian Open organisers urged fans to drink plenty of water and stay in the shade as the tournament braces for a freak heatwave on Tuesday with temperatures set to soar as high as 45C.

Jannik Sinner sent an Australian Open statement in rolling into the quarter-finals on Monday but fellow champion Madison Keys was dethroned as Melbourne braced for forecast 45C heat.

German business sentiment held steady at a low level in January, a survey showed Monday, with firms still pessimistic about any sustained recovery in Europe's biggest economy.

Manchester United striker Bryan Mbeumo and Bournemouth midfielder Amine Adli were among eight African scorers in the Premier League at the weekend.

Barcelona president Joan Laporta said that teenage talent Dro Fernandez's decision to leave the club for a planned move to Paris Saint-Germain, despite having previously agreed a new deal with the Catalan giants, was "unpleasant".

A US-based rights group said Monday it had confirmed the deaths of 5,848 people in a wave of protests in Iran suppressed by security forces, warning that it was still investigating thousands more potential fatalities.

Six-time major champion Iga Swiatek ended the fairytale run of qualifier Maddison Inglis with a rampant display at the Australian Open on Monday to set up a quarter-final with fifth seed Elena Rybakina.

Two-time defending champion Jannik Sinner sealed his place in the Australian Open quarter-finals with a straight-sets dismissal of fellow Italian Luciano Darderi in the Melbourne heat on Monday.

Israel said Monday it would only allow pedestrians to travel through the Rafah crossing between Gaza and Egypt as part of its "limited reopening" once it has recovered the remains of the last hostage in the Palestinian territory.

Israel said Monday it would only allow pedestrians to travel through the Rafah crossing between Gaza and Egypt as part of its "limited reopening" once it has recovered the remains of the last hostage in the Palestinian territory.

Amanda Anisimova has never beaten fellow American Jessica Pegula but plans to put that right when they meet in the Australian Open quarter-finals.

Jessica Pegula sent reigning champion and podcast co-host Madison Keys spinning out of the Australian Open on Monday while Jannik Sinner aims to avoid the same fate and reach the quarter-finals in 33C heat.

The death toll in a massive Indonesian landslide hit 17 on Monday as rescuers used heavy equipment to hunt for dozens still missing days after heavy rains unleashed a torrent of mud.

United States players are dominating the women's draw at the Australian Open after Amanda Anisimova on Monday made it four Americans in the singles quarter-finals for the first time in 25 years.

Lorenzo Musetti vowed Monday to push Novak Djokovic "to his maximum" after setting up an Australian Open quarter-final against the 24-time major champion.

A ferry with more than 350 people onboard sank early Monday in choppy seas off the southern Philippines, killing at least 18 and leaving 24 still missing, the coast guard said.

Jessica Pegula sent reigning champion and podcast co-host Madison Keys spinning out of the Australian Open on Monday while Jannik Sinner aims to avoid the same fate and reach the quarter-finals in stifling heat.

The US military is increasing materiel deliveries and intelligence sharing with Nigeria, Africom's deputy commander told AFP, as part of a broader American push to work with African militaries to go after Islamic State-linked militants.

Thousands of people rallied in cities across Australia demanding justice and rights for Indigenous peoples on Monday, a national holiday marking the 1788 arrival of a British fleet in Sydney Harbour.

Amanda Anisimova swept past China's unseeded Wang Xinyu into the Australian Open quarter-finals on Monday and a showdown with fellow American Jessica Pegula.

Clad in tactical gear with a helmet and hurling a tear gas canister at protesters, Border Patrol commander Gregory Bovino has become the public face of US President Donald Trump's aggressive deportation campaign.

Myanmar's dominant pro-military party has won junta-run elections, a party source told AFP on Monday, after a month-long vote that democracy watchdogs dismissed as a rebranding of army rule.

A landmark trial beginning this week in Los Angeles could establish a legal precedent on whether social media companies deliberately designed their platforms to addict children.

US speed star Lindsey Vonn will make her return to the Olympics in Cortina, defying the odds at the age of 41.

With the Milan-Cortina Winter Olympics opening on February 6, AFP looks back at some of the golden stars of the ski slopes.

Jessica Pegula used the threat of having to wear a Taylor Swift-themed Kansas City Chiefs jersey as motivation to propel her past defending champion Madison Keys and into the Australian Open quarter-finals on Monday.

This month, AFP reported from OceanXplorer, a high-tech marine research vessel owned by billionaire-backed non-profit OceanX, as it studied seamounts off Indonesia.

A dome-fronted submersible sinks beneath the waves off Indonesia, heading down nearly 1,000 metres in search of new species, plastic-eating microbes and compounds that could one day make medicines.

"Proud" Madison Keys said she could walk away with her head held high after her reign as Australian Open champion ended to good friend Jessica Pegula on Monday in the last 16.

In the heart of Nepal's capital Kathmandu, the charred remains of a police station attacked during September's unrest stand in stark contrast to a brand-new, fully equipped police van parked outside.

The Seattle Seahawks defeated the Los Angeles Rams in a high-scoring shootout to set up a Super Bowl rematch with the New England Patriots in the NFL playoffs on Sunday.