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In the 1920s Harvard University graduate student Clyde E.

Do Blind People Suffer from Seasonal Depression?

Key concepts Life [More]

What more can a scientist trying to save us do? You're on a train and you receive information that leads you to believe that a flood has weakened the scaffolding of a rail bridge ahead

Its nickname is "Isla del Encanto," or "Island of Enchantment," and on the surface, Puerto Rico seems to fulfill every paradisiacal promise made about it by glossy travel magazines. The 111 x 36 mile island has a remarkable range of geological, biological, and habitat diversity, including a rain forest, a dry forest, mangroves, karst formations, three bioluminescent bays, and one of the largest underground cave systems in the world.

Editor-in-Chief Mariette DiChristina and her daughters inflate a balloon with yeast, the tiny organisms that make bread rise in the oven.

By Matt Kaplan of Nature magazine Modern mammals often live in groups, but most marsupials are solitary. [More]

Why is it that most of us are able to track down the tiny sketch of a be-spectacled cartoon man wearing a striped shirt and a funny hat--in the midst of a busy scene filled with distractions and look-alikes? [More]

[audio of blue whale song] That's the song of the blue whale, the largest animal on the planet . It's been sped up five [OR: 30] times faster so that our ears can hear it. In reality, these infrasound songs were captured in 2009, off the coast of… Long Island

On May 5 famed paleoanthropologists Donald Johanson and Richard Leakey convened at the American Museum of Natural History in New York City to discuss human origins. It is the first time Leakey and Johanson--longtime rivals--have shared a stage since a public falling out in 1981. Viewers in the live audience and those who tuned in to the webcast tweeted the discussion and uploaded photos to Facebook, so I decided to use Storify to document this historic event.

We humans are introspective. We observe patterns of our own behavior and we have memories for review.

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By Jon Cartwright of Nature magazine This week, computer chip manufacturer Intel announced that it is preparing to enter a new dimension in transistors--literally. [More]

Yet another scientific body has jumped in to the so-called Climategate fray to dispute that the leaked documents offer any reason to doubt that human activity is warming the planet. [More]

By Pascal Fletcher MIAMI (Reuters) - Wildlife experts and volunteers in the Florida Keys have rescued seven of a group of pilot whales stranded in shallow waters and are using boats and a helicopter to locate more of the animals, officials said on Friday. [More]