Learn about Earth's biodiversity and natural resources. Plus: Explore national parks and state wilderness areas.
One of the best parts about flying is peering out the porthole-like windows and taking in the expanse of land or water beneath you.
The vivid gold of sunrise lights up a calm glacier-blue lake.
Underwater volcanoes released 'reduced iron' into the ocean, a form of iron that has proven toxic to certain oxygen-generating ocean microbes.
The world's first DNA databank of all living things will be built in Russia.
As we brace ourselves for New Year's Eve fireworks displays all over the world, let's take a moment to appreciate Mother Nature's spectacular light show.
A photograph can becomes so much more powerful when the subject is simplified.
Samples from the iconic 'sediment trap' point to a dry shift in the intertropical convergence zone, a weather system that normally unleashed plenty of rain.
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.
Activist and author blogs about politics, energy and Earth's resources.
Science journalist blogs about humans and other wildlife.