Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
Images from inside the ice caves and a powerful narrative highlight the beauty, scale and impermanence of the Sandy Glacier Cave system in Oregon.
Interpol is calling on the public to help it find fugitives wanted for illegal logging, poaching and other crimes against nature.
Aerosols from ocean waves can influence climate change, but bacteria in our water may be decreasing the aerosols' effectiveness.
Rachel Carson, whose work and writing is credited with forwarding the environmental movement, is someone's whose words can provide both contemplation and inspiration.
A new time-lapse film reveals the hidden lives of Venus flytraps, sundews and other predatory plants.
Yellowstone is famous for many things but topping the list is the abundance of hot springs, which are both beautiful and fascinating.
Smithsonian documentary warns that the biggest threat to the planet is us.
The National Park Service says 115 of its 401 sites could increase prices as early as next year.
The new findings suggest that Antarctica is home to 'significant areas of thick ice' that aren't included in climate models.
You, dear readers, have kept incredible photography flowing into our Photo of the Day series. Here are the 10 most popular images from the autumn season.
The Gamburtsev mountains' peaks and ridges would be the continent's highest spot...if only their icy ceiling would melt.
Aerosols from volcanoes cool the Earth by blocking some solar radiation and reflecting it into space.
Hike to the Canyon District of Yellowstone National Park and you'll be in for a spectacular view.
Waterfalls come in all sorts of shapes and sizes. Test your knowledge of these natural wonders.
'Nova' special explains the devastating geological phenomenon and how we can prepare for it.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.