Reasons, safety tips, key pointers as US faces deadly floods from Texas to New York

US Floods: Extreme rainfall caused deadly floods in America. Texas and New Jersey are affected. Rivers rose rapidly. Subway stations flooded. Scientists link this to climate change. A hotter atmosphere holds more water. The Gulf of Mexico is warmer. This fuels intense storms. Experts warn of a wetter future. Infrastructure is under strain. People are advised to take safety precautions.