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Darwin is going digital. To celebrate the 150th anniversary of the publication of Charles Darwin's "On the Origin of Species," the manuscripts detailing the theory of natural selection are being placed online.

A child's never-ending "why's" aren't meant to exasperate parents, scientists say. Rather, the kiddy queries are genuine attempts at getting at the truth, and tots respond better to some answers than others.

If you experience impotence, instead of a little blue pill maybe you want to apply shockwaves to your privates instead.

The deep sea is teeming with thousands of species that have never known sunlight, explorers now say.

Some species of reptiles nest communally; that is, females lay their eggs together in the same spot around the same time. Some? Maybe that should be "many," says J. Sean Doody, an ecologist now at the Australian National University in Canberra.

We all know dogs like to smell just about everything, including other animals' poo. Now scientists have figured out how to put the canines' odd pastimes to work to help sniff out the dung of endangered rhinos in Vietnam.

Humans can be difficult enough patients, but try a 300-pound gorilla.

Set your ultraviolet rays to stun. Researchers have now developed a molecular on-off switch that can paralyze animals when they are exposed to ultraviolet beams.

Robot spy planes are harnessing alternative energy to make them more covert and longer lasting than ever.

Recently there has been increased concern over hundreds of "pro-eating disorder" Web sites that provide "thinspiration" to legions of young women who want to become stick-thin. These sites provide an online community to swap tips on how to fast, disguise disordered eating, and generally "encourage" anorexia (though people don't really need to look far for information on dieting tips or how not to eat).

Grandma doesn't spend much time online - but she would be better off if she did, researchers agree.

That tuna in your sushi might be an endangered species, a new study finds.

The last breaths of mammoths and mastodons some 13,000 years ago have garnered plenty of research and just as much debate. What killed these large beasts in a relative instant of geologic time?

Box jellyfish are odd creatures. Some species have 24 eyes. They mate in mass spawning, during which males and females never touch while they release sperm and eggs into the ocean and let nature take its course.

From a crocodile sporting a boar-like snout to a peculiar pal with buckteeth for digging up grub, an odd-looking bunch of such reptiles dashed and swam across what is now the Sahara Desert some 100 million years ago when dinosaurs ruled.

Winston Churchill once predicted that it would be possible to grow chicken breasts and wings more efficiently without having to keep an actual chicken. And in fact scientists have since figured out how to grow tiny nuggets of lab meat and say it will one day be possible to produce steaks in vats, sans any livestock.

The queen conch, a marine snail, lures shell collectors with its unique, spire-shaped shell, but the mollusk also produces lustrous, deep-pink pearls. For years, people have attempted, with little success, to farm such pearls. Now, scientists say they have developed the first reliable technique for culturing conch pearls.

Though their long teeth look fearsome, male sabertooth cats may have actually been less aggressive than their feline cousins, a new study finds.

While the debate continues over whether Caster Semenya, the 18-year-old South African track sensation who blew away the field and took the gold in the women's 800-meter in Berlin in August, is a man or a woman, we soon must confront an even more complex issue: Are elite athlete humans or androids?

A species of sea star has figured out a novel way of keeping cool on rocky shorelines. The animal literally soaks up chilly water during high tides to protect itself from the blazing temperatures that persist when the tide goes out, scientists announce today.

Some obese individuals don't realize they have a weight problem, a new study finds. That could be an unhealthy attitude as these same people tend not to exercise and have many risk factors for cardiovascular disease.

Scientists have uncovered heart disease in 3,500-year-old Egyptian mummies, suggesting the risk factors behind it are not just modern in nature.

Some truly strange creatures can be found on the ocean seafloor, and boneworms are among the most bizarre - they have no eyes or mouth and feast on the bones of dead whale carcasses.

It's no secret to students that coed dorms are more fun than same-sex dorms. But they can also fuel very unhealthy behavior that might otherwise be moderated.

Editor's Note: This is the last in a 10-part LiveScience series on the origin, evolution and future of the human species and the mysteries that remain to be solved.

When it comes to an attractive face, color can make all the difference, suggests a new study.

Texting long messages can be a pain in the neck - literally.

Rivals on the dating scene could make one feel closer to God, according to new research that suggests one's religiousness may be more closely related to mating strategies than previously known.