The UN says a powerful storm is sweeping through Gaza, leaving 800,000 people in danger from deluged camps and collapsed buildings.

Also: an Australian minister accuses Reddit of trying to protect its profits, after it launches a legal challenge against the country's landmark social media ban for under-16s; how a growing number of young women are challenging the Iranian authorities; why the low-budget French videogame "Clair Obscur" has seen off its bigger American rivals to sweep the Game Awards; why conservationists fear some of the world's rarest apes, the Tapanuli orangutans, may have been destroyed in a devastating cyclone; and how changes in polar bear DNA could help protect the Arctic animals from climate change.