As more schools abandon plans for in-person classes, one that opened in Indiana this week had to quarantine students within hours.
A doctor in one of Pakistan’s busiest hospitals has kept a video diary of the country’s struggle with coronavirus.
Ingenuity is a 1.8kg (4lb) helicopter that will ride to Mars inside Nasa’s Perseverance rover.
South African sculptor Pitika Ntuli on what we should do with reminders of colonial and racist history.
Canada’s PM denies playing a role in picking a charity tied to his family for a federal programme.