How long is a day on Earth?

I'm going to ask you how long a day is on Earth, and you're going to get the haunting suspicion that this is a trap. Your instincts are right, it's a trap! The answer may surprise you.

Chasing down fugitive emissions

In an effort to respond to President Obama's call to reduce greenhouse gas emissions by 28 percent by the year 2020, researchers at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) have identified ...

Planet 'devoured in secret' by its own sun

(Phys.org)—A planet roughly 1.4 times the size of Jupiter is being consumed by its own star behind a shroud thanks to a magnesium veil absorbing all of certain light wavelengths, according to new observations by the Hubble ...

Curiosity team switches back to Earth time

(Phys.org)—After three months working on "Mars time," the team operating NASA Mars rover Curiosity has switched to more regular hours, as planned.

One day, many cameras: film shot worldwide debuts

"One Day on Earth" -- touted as the first film with footage from every country taken on the same day -- was to be screened for the first time Sunday around the world, including at the UN.

Rebates to cut price of $60 LED bulb

(AP) -- How much would you pay for an amazing, state-of-the-art light bulb? Shoppers will be asking themselves that very question at Home Depot and other outlets starting Sunday - Earth Day - when the bulb that won a $10 ...

Earth Day? In Texas, it's for the birds

Team Sapsucker sped away in a minivan moments after midnight on Earth Day, ears perked and binoculars in hand, in a race to identify a US record number of bird species in a 24-hour period.

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