After the relentless rain, South Africa sounds the alarm on the climate crisis

Many are still missing after this month's floods. Extreme weather is becoming more frequent, and it can be devastating

Survivors of South Africa's devastating floods have described sheet upon sheet of relentless rain" that washed away entire houses, bridges and roads, killing about 450 people and making thousands homeless.

The storm, which delivered close to an entire year's usual rainfall in 48 hours, took meteorologists by surprise and has been blamed by experts on climate change. The new disaster comes after three tropical cyclones and two tropical storms hit south-east Africa in just six weeks in the first months of this year.