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Dams and climate change are among the threats facing Southeast Asia's famed Mekong River. Cambodia is scrapping plans for two new dams, but is it enough to save the river's biodiversity?

Gov. Janet Mills said, based on input from port and offshore wind stakeholders, including the University of Maine and on technical and engineering analyses, the state has concluded that the Sears Island parcel is the most feasible port development site. It's expected to be 100 acres of development in total.

In New Haven, Connecticut, one school is working on a solution to pumpkin waste, with a fun twist: a community compost drop-off, which once a year hosts a pumpkin smash.

Over 4,500 square miles of ocean will be protected off the California coast. It will also be managed in partnership with the Indigenous groups that fought to create it.

A precise record of the last major reversal of the Earth's magnetic poles can be found in ancient trees. Researchers say this event 42,000 years ago had a huge impact on the planet and ancient humans.

In today's political climate, conspiracy theories are commonplace. But they're nothing new. In the 1960s, the John Birch Society built a movement around them.

Leaves typically start to peak in northern states by early October, but projecting peak foliage isn't an exact science. Here are some things you can do to get the most out of fall's colors.

NPR's Leila Fadel speaks with climate change advocate and novelist Lydia Millet about her first nonfiction book: We Loved It All: A Memory of Life.

The idea that a comet or asteroid impact led to the downfall of the dinosaurs has been around for years. Now, Paul Renne and colleagues report in Science that they've narrowed down the timing of that collision. It's practically simultaneous with dinosaur extinction.