Columbia canceled in-person classes, dozens of protesters were arrested at New York University and Yale, and the gates to Harvard Yard were closed to the public Monday as some of the most prestigious U.S. universities sought to defuse campus tensions over Israel's war with Hamas.

More than 100 pro-Palestinian demonstrators who had camped out on Columbia's green were arrested last week, and similar encampments have sprouted up at universities around the country as schools struggle with where to draw the line between allowing free expression while maintaining safe and inclusive campuses.

An independent review of the neutrality of the U.N. agency helping Palestinian refugees found that Israel never expressed concern about anyone on the staff lists it has received annually since 2011. The review was carried out after Israel alleged that a dozen employees of the agency known as UNRWA had participated in Hamas' Oct. 7 attacks.

In a wide-ranging 48-page report released Monday, the independent panel said UNRWA has "robust" procedures to uphold the U.N. principle of neutrality, but it cited serious gaps in implementation, including staff publicly expressing political views, textbooks used in schools the agency runs with "problematic content" and staff unions disrupting operations. It makes 50 recommendations to improve UNRWA's neutrality.

Jewish Tunisians who organize an annual pilgrimage to one of the world's oldest synagogues are planning a scaled-down event next month, citing concerns about security less than a year after a deadly shooting there shook their community.

Thousands regularly make the journey to Djerba — the North African island where many of Tunisia's remaining 1,500 Jews reside — to celebrate the Jewish holiday Lag B'Omer. But this year, the community has decided to limit them to the 26-century-old El-Ghriba synagogue instead of the island-wide events traditionally held.

Hong Kong has long been a major producer and consumer of great food, and a great amount of plastic and Styrofoam to go with it.

That's going to change as new legislation aiming to stop the sale and distribution of Styrofoam products and single-use plastic cutlery went into effect on Monday.

The hunt for the origins of COVID-19 has gone dark in China, the victim of political infighting after a series of stalled and thwarted attempts to find the source of the virus that killed millions and paralyzed the world for months.

The Chinese government froze meaningful domestic and international efforts to trace the virus from the first weeks of the outbreak, despite statements supporting open scientific inquiry, an Associated Press investigation found. That pattern continues to this day, with labs closed, collaborations shattered, foreign scientists forced out and Chinese researchers barred from leaving the country.

Four Germans were caught laying white roses in memory of Adolf Hitler at the house where the Nazi dictator was born in western Austria on the anniversary of his birth, and one gave a Hitler salute as they posed for photos, police said Monday.

Hitler was born on April 20, 1889, in Braunau am Inn. After lengthy wrangling over the future of the house where he was born, work started last year on turning it into a police station — a project meant to make it unattractive as a pilgrimage site for people who glorify Hitler.

Europe is the fastest-warming continent and its temperatures are rising at roughly twice the global average, two top climate monitoring organizations reported Monday, warning of the consequences for human health, glacier melt and economic activity.

The U.N.'s World Meteorological Organization and the European Union's climate agency, Copernicus, said in a joint report that the continent has the opportunity to develop targeted strategies to speed up the transition to renewable resources like wind, solar and hydroelectric power in response to the effects of climate change.

Iranian and Pakistani leaders vowed to strengthen economic and security cooperation in a meeting on Monday, as the two countries seek to smooth over a diplomatic rift.

Their meeting was part of efforts by Islamabad and Tehran to mend ties which had been briefly strained in January when each carried out strikes in other's territory, targeting militants accused of attacking their own security forces.

Liverpool stayed in the hunt for the Premier League title and moved level on points with leader Arsenal with a 3-1 victory over Fulham that was illuminated by a brilliant free kick by Trent Alexander-Arnold on Sunday.

Liverpool bounced back from Thursday's exit to Atalanta in the Europa League quarterfinals and last weekend's home loss to Crystal Palace by winning at Craven Cottage after Jurgen Klopp dropped Mohamed Salah and Alexis Mac Allister to the bench.

Manchester United set up another FA Cup final against fierce rival Manchester City in a way no one could ever have imagined.

In a semifinal match on Sunday that will live long in the memory, United blew a three-goal lead against second-tier Coventry, was saved by the narrowest of offside calls by the VAR in stoppage time of extra time to keep the score at 3-3, then came from behind in a penalty shootout to advance to the May 25 title match back at Wembley Stadium.