February 21, 2019, 2:32 p.m. by Noel Kirkpatrick
The last time this tortoise was seen was 1906.
February 21, 2019, 8:18 a.m. by Michael d'Estries
Brief phenomena, streaking through the cosmos at 15,000 mph, herald the formation of a young star.
February 18, 2019, 1:17 p.m. by Noel Kirkpatrick
After 200 years of uncertainty, Australian researchers think they've solved the mystery of the cassowary's casque.
February 13, 2019, 12:50 p.m. by Jacqueline Gulledge
Photo is this year's Wildlife Photographer of the Year People's Choice Award winner.
February 12, 2019, 2:31 p.m. by Mary Jo DiLonardo
Riding through snow and cold weather is easy and normal here.
January 30, 2019, 12:12 p.m. by Jacqueline Gulledge
As rare earth elements are mined for use in smartphones, they are at risk of disappearing.
February 20, 2019, 5:09 p.m. by Michael d'Estries
Astrophotographer Andrew McCarthy spent hours creating this breathtaking photo of our moon.
February 20, 2019, 3:39 p.m. by Noel Kirkpatrick
Indiana Dunes National Lakeshore became the 61st national park, raising the profile of the 15,000-acre area.
February 20, 2019, 12:22 p.m. by Michael d'Estries
Astronomers say the discovery is the beginning of a new dawn in charting the universe.
February 20, 2019, 8:22 a.m. by Tom Oder
Botanist and biologist Francis Hallé introduces a new world of rainforest flora in his latest art-driven book.
February 19, 2019, 10:49 a.m. by Michael d'Estries
Here are a few highlights from legislation that's poised to boost wilderness protection across the country.
February 15, 2019, 10:19 a.m. by Jacqueline Gulledge
Artist Roberto Benavidez breathes new life into an ancient art form.
February 16, 2019, 10:47 a.m. by Josh Lew
These attractions might be unusual, but they've found their way onto a surprising number of tourists' itineraries.
February 13, 2019, 9:34 a.m. by Josh Lew
Some of the smallest nations on Earth are also the most interesting.
February 8, 2019, 12:10 p.m. by Josh Lew
Think bird-watching is boring? It's not if you visit these 10 destinations during bird migration season.
February 5, 2019, 2:51 p.m. by Sidney Stevens
There's a wildly wonderful gray area between male and female.
January 29, 2019, 10:47 a.m. by Bryan Nelson
Many living fossils still alive today have bizarre, eccentric traits that make them seem more like aliens than anything from this world.
January 15, 2019, 11:05 a.m. by Josh Lew
The top international sites for novice and expert divers feature impressive fish and beautiful coral reefs.