With billions of children to visit in just one night, how does Santa make it to every house? And how does he fit down the chimney — assuming your house has one. Astrophysicist Neil De Grasse Tyson talks to David Greene about the science of Santa.
With the rise of the do-it-yourself movement, more groups are springing up to encourage kids to link crafts and science. Modeled on more traditional Scouting groups, kids and their parents meet up in tool-filled "hacker spaces" to build electronics and get creative.
Sandy Hook and other mass killings have left people wondering how someone could engage in such behavior. Scientists say that genes can indeed predispose a person to mental illness or violence. But genetic variants alone can't explain why someone commits mass murder.
The hagfish or "slime eel" shoots out slime containing silk-like fibers of remarkable strength. Douglas Fudge, a biologist at the University of Guelph, says it could be a good substitute for today's synthetic fibers--it's 10 times stronger than nylon, for example--and bacteria can be trained to make it.
In a paper to be published in Astronomy & Astrophysics, researchers identified five possible planets around the star Tau Ceti. One of these alien worlds is within the star's habitable zone. Study co-author Steven Vogt discusses whether life could exist on the planet.
The ancient Maya had many scientific accomplishments: they tracked the Moon and the planets, knew a solar year was 365 days, and even invented the concept of zero. As for the 2012 apocalypse? It's simply a misinterpretation of the Maya calendar, say archaeologists Marcello Canuto and William Saturno.
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