Tribal Ink

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20 Legendary Day Hikes in the National Parks

The greatest hikes in U.S. national parks aren't necessarily the longest. Here are 20 treks that get hikers into the best a park has to offer in just a day.

Hiking

How To Map Your Room's Wi-Fi Strength With A Wood Mill [Video]

Because those streaming cat videos won't wait<p>Why should you guess where a Wi-Fi hotspot is when you could view it in color?<p>A computer scientist has devised a way to build colorful 3D maps of Wi-Fi strength. His keys tools: a color-changing LED light, a laptop, and naturally, a wood mill.<p>Dominique …

Jupiter's Ganymede has underground ocean: One more 'soggy' moon

Astronomers have found the most conclusive evidence yet that a large watery ocean lies beneath the surface of Jupiter's moon Ganymede.<p>With the discovery, Ganymede joins Enceladus and Europa as another moon in the solar system with a confirmed subterranean ocean.<p>"The solar system is now looking like …

Astronomy

Why coenzyme Q10 won't stop you from aging - Futurity

The popular dietary supplement ubiquinone, also known as Coenzyme Q10, is sold as an anti-aging pill, but there's new evidence it's likely …

Anti-aging

Arsenic Antidote Hidden In Our Genes

For centuries, arsenic was the go-to poison for murder.<p>If you wanted to knock off an heir to the throne or speed up the arrival of your inheritance, all you had to do was add a dollop of rat poison to your rival's food. They wouldn't see or taste it. And the police wouldn't detect it — at least not …

Environmental Health

Majority of House members sign letter blasting Obama bullet ban proposal

Opposition to the Obama administration's proposal to ban a popular bullet is gaining steam in the House of Representatives, where more than half of the lawmakers have signed a letter opposing the move.<p>The Bureau of Alcohol, Tobacco, Firearms and Explosives says it wants to ban popular .223 M855 …

Guns