N'Djamena sits where the Chari and Logone rivers meet, leaving it highly exposed to flooding. During the 2024 rainy season the city protected 1.5 million residents even as rivers hit record levels, after clearing 217 miles of drainage and deploying 12 mobile pumps.
Super Typhoon Ragasa caused no fatalities when it reached mainland China last month.
The techniques work better in noisy environments like cities and require less computing power than previous automated methods.
Building codes and infrastructure have been strengthened to withstand seismic forces, reducing damage and saving lives. An advanced early warning system and education programs have helped prepare the population.
Current earthquake warning systems typically give only a one to two-minute heads-up. But now researchers have identified nearly imperceptible shifts up to two hours before major quakes.