Dr Khan examines what we know so far, who should take an AstraZeneca vaccine and the symptoms of a blood clot.
The rebel group claim they targeted Aramco refineries in Jeddah and Jubail but Saudi Arabia has yet to confirm.
Rehman spent his life defending human rights, opposing military dictators, fighting for the rule of law and democracy.
19 million Brazilians have gone hungry during the pandemic, new study finds, as food insecurity is also on the rise.
Hundreds of thousands take a dip in Ganges river even as the nation racks up world’s highest tally of new daily cases.