There are flooding rains in Hawaii, rare snow in Alabama and a severe heatwave in the west coast

Scientists say a record-smashing March heat wave in the U.S. Southwest shows climate change is already driving more dangerous weather extremes.

There are flooding rains in Hawaii, rare snow in Alabama and a severe heatwave in the west coast

Experts say brutal temperatures in west threaten to melt sparse snowpack – and warn hot, dry conditions here to stay