Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
From frozen waterfalls to branches bent with snow, these gorgeous photos from members of our Flickr group will make you want to bundle up and head outside.
Scientists are hoping to compile the most complete picture to date of how carbon dioxide is distributed, both geographically and seasonally.
The sequoia in Wrest Park was planted just after the Christmas tree trend began in Victorian England.
Two documentaries revisit the 2004 disaster and explore how science has advanced since then.
Competitors may have to fend off raw sewage and litter in Guanabara Bay and other venues — even as officials scramble to clean up the area for the big event.
Looming sequoias, bulbous baobabs and gnarly bristlecone pines shine in new book.
This beach scene looks like a beautiful abstract painting.
Scientists are puzzled by exactly where all these bodies came from as there were no large cities nearby to justify such a large gravesite.
As the polar region warms, it becomes easier to access for various enterprises, including untapped energy extraction sites and new shipping routes.
The formation of the rock, and the diamonds within it, remain a mystery, but the rock is likely very old.
Glaciers all behave differently, and their behaviors can influence scientists' data and thus their predictions about sea level rise.
President Obama has blocked future oil and gas drilling in the bay, which provides 40 percent of U.S. wild-caught seafood.
Believe it or not, these amazing images of icebergs and tropical beaches are not photographs.
Construction is about to begin on a massive, Chinese-built canal through the heart of Nicaragua — but there are many people who want to stop it.
'Extreme Realities' on PBS explores how severe weather is linked to climate change and global security.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.