Scott Rosenfield (@ScottRosenfield) is a Level 2 USA Cycling Coach and Outside's Online Editor.
The wildfire blazing near Yosemite National Park has entered Yosemite and now threatens the power and water supply for millions in the San Francisco Bay area.
With federal funds rapidly evaporating, the Desert Tortoise Conservation Center will be closed by 2014 and officials plan to euthanize hundreds of tortoises they've been caring for since the species...
After coming under pressure from the National Football League, ESPN has pulled out of an investigative project centered on head injuries with "Frontline," The New York Times reports.
As massive fires sweep through Portugal, at least one helicopter crew resorted to filling their bucket from a local pool to fight the flames.
The Italian astronaut who nearly drowned in his helmet during a spacewalk last month is shared new details about the near-miss on his blog Tuesday.
The Cycling Anti-Doping Foundation (CADF) has confirmed Tuesday that there were no positive doping tests during the 2013 Tour de France.
Oscar Pistorius was indicted on the charge of murdering his girlfriend, Monday.
A 16-year-old boy has been hospitalized after being attacked by a shark Sunday afternoon.
A Missouri man died after falling 150 on Longs Peak Thursday, Rocky Mountain National Park officials announced.
Two people were injured Thursday when a grizzly bear charged a group of hikers in Yellowstone National Park.
The British stuntman who performed at the opening ceremony of the London Olympics was killed in a wingsuit flying accident Thursday in the Swiss Alps.
The last of the giant, old-growth redwood trees along the California coast experienced an unprecedented growth spurt in recent years, a study by the Redwoods and Climate Change Initiative revealed...
Two Italian mountain climbers were killed and another injured Tuesday by an avalanche in the French Alps.
Portions of a Florida resort were destroyed Sunday when a 60-foot-wide sinkhole formed below under two buildings, collapsing one and sinking another.
From Virginia to New York, dolphins are dying at seven times the normal rate, with at least 124 stranding reported since July, wildlife officials reported Thursday.