At least 70 people in southern Africa were killed as Tropical Storm Ana struck Madagascar this week before slamming into Mozambique and Malawi. Torrential rains triggered landslides and caused flooding that washed away bridges, submerged farmers’ fields and damaged tens of thousands of homes. Hardest hit was Madagascar, where the U.N. says 1 million people are already facing severe hunger from food shortages brought on by acute drought. Last year the World Food Programme warned Madagascar faced the first-ever famine caused by climate change.