Bottled water sales are way up, thanks in part to the industry marketing it as cleaner than tap water. But plastic poses a real danger, according to experts and studies.

This week we hear from readers about encouraging environmentalists, both young and old.

Residents and vacationers flock to this New York lake each summer, but the water carries something harmful — and the community is fighting back.

Conservation victories often look like moments. In reality they’re the visible tip of years — sometimes decades — of work, and we all too often fail to recognize the people responsible.

Although this species has been around for 100 million years, 90% of its population has vanished in just the past two centuries.

A recent move by the Supreme Court could actually make fossil-fuel companies more vulnerable to lawsuits, but the polluters are pushing for a workaround.

By using microplastic to create artistic collages, I’ve helped people relate to and understand the crisis of plastic pollution and its dangerous health risks.

A new book by criminal psychologist Dr. Julia Shaw explains the motives of environmental criminals and the defenders who expose their EcoCrimes.

By focusing on reusable products, some organizations are helping to break our addiction to single-use plastic.

This year’s list includes a notable extinction caused by climate change — and several caused by introduced predators.