Three American pilots killed in helicopter collision in Alaska
Joe Biden to run for 2024 re-election
Earth's glaciers are melting at record level
Sudan conflict: At least 400 killed
Twitter to strip blue tick of non paying users
Sudan battle: Residents retreat from capital
At least 78 crushed to death in Yemen
UN: India's population will overtake China by mid-2023
Kenyan boy wears burqa to compete in women's chess
Battle continues for third day in Sudan