A wave of Kenyan elephant deaths has been blamed on pesticides, but experts tell the BBC they are doubtful.

This year's harvest could be the worst on record due to the exceptionally dry spring and summer.

While the collision was an accident, it is a unique scientific gift for planetary geologists that could provide important data for future space missions.

New images and footage of the Sun show "whirlpools" of activity that it has not been possible to see before.