Latest articles by Brett Israel
Photo: America's Largest National Park
Alaska's Wrangell-St. Elias National Park is bigger than Switzerland.
Batty Image: Alabama's Bat Hibernation Cave
Alabama's Fern Cave National Wildlife Refuge home to some 1 million gray bats.
Bizarre Geology: The Hoodoos of Bryce Canyon
Utah national park is home to some out-of-this-world geology.
Peep the Fall Foliage at Montana's Chief Mountain
Slightly dry areas of the country could create a pleasant surprise for leaf lovers.
7 Most Mars-like Places on Earth
With NASA's Curiosity Rover set to hit the Red Planet on Aug. 5, here are some of the most Mars-like places on Earth where scientists have prepped for Mars missions past and future.
After Nearly Dying, Mountaineer Returns to Everest
Ph.D. candidate to live among Sherpa mountain guides and study them.
Tornado Season's Early Start May Predict Ominous Year
Atmospheric patterns in place for an above normal season.
Japan Quake Aids Calif.'s Future Warning System
Data from Japan quake helping refine warning algorithms.
Last Resident of Hawaii Subdivision Evicted by Lava
30-year resident's home burned down.
Entire Month's Worth of Tornadoes Strike in One Day
81 reported tornadoes overnight. March averages 87 twisters for entire month.
Leap Day Tornado-Producing Storms Seen From Space
NASA satellites captured the storms roaring across the Midwest.
Deadly Leap Day Tornado Was Rare and Powerful EF-4
Such strong storms are not common for February.
A Free Hike: National Forests To Drop Fees
Many trailheads, daily recreation sites and general forest areas soon to be free.
Everest to the Indian Ocean: Duo Named Adventurers of The Year
Meet the other adventurers of the year for 2012.
Nebraska Hit By First-Ever February Tornado
See a video of the twister, which struck a remote area of the state.
5 Percent of Tsunami Debris Could Reach US Coast
Debris expected to reach U.S. shores by 2013.
