Expanding drought leaves western US scrambling for water

Tumbleweeds drift along the Rio Grande as sand bars within its banks grow wider. Smoke from distant wildfires and dust kicked up by intense spring winds fill the valley, exacerbating the feeling of distress that is beginning ...

Dwindling water levels of Lake Powell seen from space

After decades of drought, water levels in Lake Powell, the second-largest human-made reservoir in the United States, have shrunk to its lowest level since it was created more than 50 years ago, threatening millions of people ...

Stemming the tide of invasive species in Great Lakes

Ballast water release from ocean vessels has introduced hundreds of invasive species to coastal ecosystems worldwide, causing major disruptions to fisheries and biodiversity. Attempts to control aquatic invasions have met ...

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