Tom Howarth is a Newsweek reporter based in Bristol, U.K. His focus is reporting on nature and science. He covers climate change, biodiversity, extreme weather, zoonotic diseases and more.

The map above shows the sources of water for four ... and a whopping 80 percent of the state’s water supply goes toward agriculture. But still, the question remains: Why are Americans across ...

How bad is it? Which places are most affected? What does it mean for our water supply and wildfire risk? These 10 maps and charts tell the story. Click on each image to enlarge. 1) Two-year ...

Map of at-risk watersheds in the US Western ... its secondary impacts to the water supply could affect thousands. These watersheds can carry harmful burn materials hundreds of miles downstream ...

Though unseen, groundwater is also an important source of the water supply. Aquifers ... This gorgeous map from Anna Riling of Four Corners Mapping shows the vast Navajo Aquifer in northeastern ...

Above-normal temperatures combined with paltry precipitation levels have led to rapid snowmelts across the U.S. West — ...

In the wake of reports that a lack of water supply may have negatively impacted the work of firefighters battling the multiple blazes in Los Angeles, California Governor Gavin Newsom called for an ...