Human-caused climate change worsened recent torrential rains and floods that devastated parts of southern Africa, killing more than 100 people and displacing hundreds of thousands, researchers have said. It was also compounded by the current La Nina weather phenomenon which naturally brings wetter conditions in the southern Africa region and is now operating within a much warmer atmosphere. Around 1.3 million people across southern Africa were affected by this month’s floods, The World Health Organisation said. “This event was a surprise to us because we have experienced the previous ones 25 years ago, which flooded the same areas,” said Bernardino Nhantumbo, a researcher with the Mozambique weather service. The central and southern parts of Mozambique were the hardest hit, with the Gaza provincial capital of Xai-Xai and the nearby town of Chokwe largely submerged under water.