Skip to main content Skip to footer site map

All posts by Melissa Gaskill

Melissa Gaskill is a freelance science writer based in Austin, Texas. Her work has appeared in Nature Conservancy Magazine, Scientific American, The New York Times, Alert Diver, Men’s Journal and many other publications.

The Future of the Wolves of Isle Royale

Wolves of Isle Royale

Isle Royale National Park is a remote island in Lake Superior where, between 2009 and 2018, the wolf population fell from 24 to only two - the lowest in more than 50 years. Now, the National Park Service is re-introducing wolves to the area in ...


The Current State of Coral Reefs

Coral Reef

Coral reefs cover less than 1 percent of the Earth’s surface yet feed and shelter a significant amount of marine life, including some 4,000 species of fish. However, these vital ecosystems face an increasingly bleak future.


When Light Becomes Pollution

Image of Earth at night

Many of us have seen images taken from space of the Earth at night. The planet sparkles, dazzling light from cities connected to each other by bright tendrils. It looks eerily beautiful and somehow festive. But this beauty actually is light pollution and it has, ...


Amazon River Dolphins in Decline

Amazon River Dolphin

Those who explore the waters of the Amazon basin occasionally hear a forceful snort, the sound that a pink river dolphin or boto makes when it surfaces to exhale. Visitors sometimes catch a glimpse of a pinkish, rounded forehead or small dorsal fin just above ...



PBS is a 501(c)(3) not-for-profit organization.