Why is the flu worse in winter? Low humidity is a big factor, new research finds.

Following the 1783-84 eruption of the Laki volcano on Iceland, Benjamin Franklin speculated on its effects on the climate. A new study shows he was right.

Heavy rainfall events that occur on July 1 result in 70% fewer cases of mosquito-borne disease than those that occur just a month earlier, research finds.

Scientists can predict heatwaves in California by looking for rain half a world away.

Climate change is the only explanation for the widespread heat waves last summer, researchers say.

"Fire not being influenced by moisture anymore? That is surprising. It's going to be a problem for people, for firefighters, for society."

The free public website Drought Eye shows locations across the continental US where drought conditions may be occurring.

When it comes to extreme weather, our short memories may make us think it's "normal," a new study of Twitter messages shows.

Data about soil temperature and moisture can improve predictions about how much rain will fall during monsoons.

The period from 1808 to 1915 involved little to no understanding of tornadoes and the start of population growth in tornado-prone regions of the US.