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Many ecologically important wetlands, like these in Kulm, N.D., lack surface connections to navigable waterways. USFWS Mountain-Prairie/Flickr

The Supreme Court just shriveled federal protection for wetlands, leaving many of these valuable ecosystems at risk

In Sackett v. EPA, a suit filed by two homeowners who filled in wetlands on their property, the Supreme Court has drastically narrowed the definition of which wetlands qualify for federal protection.
Establishing the financial worth of a river’s fish is complicated when many people don’t sell the fish they catch. Tang Chhin Sothy/AFP via Getty Images

How much is the world’s most productive river worth? Here’s how experts estimate the value of nature

Putting a dollar value on nature has staunch opponents who say it’s morally wrong, but without it, building dams and other infrastructure can run roughshod over vital ecosystems.
Roads require de-icing strategies in northern regions, but this practice has negative effects on aquatic biodiversity.

Freshwater ecosystems are becoming increasingly salty. Here’s why this is a concern

Although it has been considerably less studied than other environmental problems, salinization presents major challenges for biodiversity in freshwater and coastal areas.
A small rain tank could supply 15% of a household’s total annual water consumption on average across the UK. Alexander Knyazhinsky/Shutterstock

If more houses had water butts, it could help with drought, flooding and water pollution

Extreme weather is set to dominate our future – can collecting rainwater reduce the threat posed by both drought and flooding?

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