WASHINGTON: Emergency response units assess wreckage in the Potomac River on Thursday, January 30, after a passenger jet and a US Army helicopter collided near Washington, DC (Andrew Harnik/Getty Images)

OSWIECIM: Shoes that were taken from prisoners many years ago are displayed at the Auschwitz-Birkenau State Museum in Oświęcim, Poland, on Monday, January 27. It has now been 80 years since the Soviet Army liberated Auschwitz.(Oded Balilty/AP)

GAZA: Displaced Palestinians make their way back to their homes in northern Gaza on Monday, January 27, about a week after a ceasefire deal between Hamas and Israel went into effect (Mohammed Salem/Reuters)

MELBOURNE: Jannik Sinner celebrates after winning his third grand slam title in Melbourne, defeating Alexander Zverev 6-3, 7-6(4), 6-3 in the men’s final of the Australian Open on Sunday, January 26 (David Gray/AFP via Getty Images)

HONG KONG: Fireworks illuminate Hong Kong’s Victoria Harbour as people celebrate the second day of the Lunar New Year on Thursday, January 30 (Man Hei Leung/Anadolu/Getty Images)

SCHLADMNING: Austrian skier Marco Schwarz competes in a World Cup giant slalom event in Schladming, Austria, on Tuesday, January 28 (Giovanni Auletta/AP)

NANTONG: Performers create sparks with molten steel during a Lunar New Year lantern festival in Nantong, China, on Monday, January 27 (AFP/Getty Images)

PRAYAGRAJ: Hindu holy men take a dip in the Triveni Sangam, the confluence of three holy rivers, during the Maha Kumbh Mela festival in Prayagraj, India, on Wednesday, January 29 (Deepak Sharma/AP)

SURABAYA: Lion dancers perform for a crowd in Surabaya, Indonesia, as part of Lunar New Year celebrations on Wednesday, January 29 (Juni Kriswanto/AFP/Getty Images)

LHOKNGA: Farmers work in a rice paddy field in Lhoknga, Indonesia, on Thursday, January 23 (Chaideer Mahyuddin/AFP/Getty Images)