Steve is a "remarkably common" gas ribbon in the upper atmosphere.

Kuki Gallmann, author of I Dreamed of Africa, is flown to hospital after an ambush.

But the global body believes protectionist policies could choke off improving global growth.

Mary Keitany breaks Paula Radcliffe's women's-only world record to win the London Marathon, while Daniel Wanjiru takes victory in the men's race.

The Pope also laments that "international accords are more important than human rights".

Romania captain Ilie Nastase is suspended by the International Tennis Federation over a incident that left Johanna Konta in tears.

Chloe Kabealo, who got out and raised the alarm, says she tried to go up for air and kept rising.

Facing a slump in popularity, the AfD is seeking to enter national parliament for the first time.