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Finally answered! Which came first, the chicken or the egg? Which came first, the chicken or the egg?

Finally answered! Which came first, the chicken or the egg?

The chicken, no the egg, no the chicken, no the egg. It's enough to make your head spin right off your neck. We’ve all been through the logic; most of us end up at the same place. As Luna Lovegood, the dreamy yet dotty witch from Harry Potter put it when asked the riddle, "a circle has no beginning. " And indeed, attempting to identify the first case of a circular cause and consequence is an exercise in utter futility. But that doesn’t stop us from asking. Basically, many, many moons ago there was a chicken-like bird. Maybe the question we should be asking is: Which came first, the proto-chicken or the proto-chicken egg? Who will live to be over 100?

By Avi Roy On March 5, we wish a very happy 116th birthday to Misao Okawa who was born in Japan in 1898, making her the world’s oldest person.

Who will live to be over 100?

When she was young, Einstein hadn’t yet grasped the mysteries of a relative universe. Cars were becoming affordable and were thought as the savior of horse-polluted cities. The telephone was the next big thing in communication. More than a hundred years later, we oft cite Einstein’s famous equation of relativity without understanding it. The media obsesses over the inevitable “secret” that centenarians (and super-centenarians, like Okawa, who live past 110) reveal as the reason for their exceptionally long life.

Understanding Evolution. Solve Puzzles for Science. These Baby Birds Puke on Predators with Third-Hand Weapons. When Eurasian rollers feed their babies grasshoppers, centipedes, and other insects, the chicks aren’t just getting the nutrition they need to grow—they’re getting an arsenal.

These Baby Birds Puke on Predators with Third-Hand Weapons

When animals can’t make their own defenses, they often borrow them from elsewhere. Poison dart frogs hang on to the toxic alkaloids in the beetles and mites that they eat, and then secrete the toxins through their skin. The caterpillars of tobacco hornworms eat tobacco leaves and then exhale the nicotine in a cloud of “defensive halitosis.” African crested rats gnaw on the roots and bark of certain trees and then slobber the poison onto their fur. Rollers—stocky, blue-and-cinnamon-colored birds related to kingfishers—also take out a chemical loan to defend themselves, but they go through a middleman. Poison dart frogs advertise their toxicity with bright colors and bold patterns. Do Plants Sleep? Do Microbes Sleep? Do Insects Sleep? Imagining the Post-Antibiotics Future. Medical procedures may involve a high risk of infections, but our everyday lives are pretty risky too.

Imagining the Post-Antibiotics Future

One of the first people to receive penicillin experimentally was a British policeman, Albert Alexander. He was so riddled with infection that his scalp oozed pus and one eye had to be removed. The source of his illness: scratching his face on a rosebush. (There was so little penicillin available that, though Alexander rallied at first, the drug ran out, and he died.) Before antibiotics, five women died out of every 1,000 who gave birth.

The Neuroscience Of Imagination. "Use your imagination.

The Neuroscience Of Imagination

" You've probably heard this phrase since before you can remember. It was your imagination you were using to create your first finger painting; your imagination that let you visualize what it might be like to make out with your high school crush; your imagination that helped you dream up the idea for your business or book or the house you'll one day build. But when you use your imagination, what exactly is at work? Try this: Close your eyes and imagine a bowl of fruit. This is pretty simple. Now close your eyes and imagine these pieces of fruit could talk. "Perception and imagination are linked because the brain uses the same neural circuits for both functions," says Gregory Berns, a professor of neuroeconomics and director of the Center for Neuropolicy at Emory University.

When you call to mind something you've never actually seen, it's a lot easier to think creatively than if you try imagining something that's familiar to you. The Discovery of Photosynthesis. Who Discovered Photosynthesis?

The Discovery of Photosynthesis

Photosynthesis is a very important and complex process in nature and some of its phases are still not completely understood. Photosynthesis in plants and a few bacteria is responsible for feeding nearly all life on Earth. It does this by taking energy from the sun and converting it into a storable form, usually glucose, which plants use for their own life processes. Animals that consume plants also make use of this energy, as do those that consume those that consume plants, and so on to the top of the food chain. As important a job as making all of the world's food is, there's another vital function that photosynthesis performs: It generates the oxygen that oxygen-breathing animals need to survive.

From PBS's "NOVA" program Many scientists contributed to the discovery and understanding of photosynthesis throughout the ages; in this page are outlined some of those crucial milestone experiments that contributed to this effort. Famous Historic Experiments Links.