The giant sloth megatherium was a vegetarian

Together with an international team, Senckenberg scientists examined the diet of the extinct Giant Sloth Megatherium. Based on analyses of the collagen in the fossil bones, the researchers concluded in their study, which ...

Tidal locking could render habitable planets inhospitable

Tidally-locked planets - planets with one side perpetually facing their star while the other remains shrouded in darkness - tend to be warmer on one side than the other. The presence of an atmosphere can help distribute the ...

Search for habitable planets should be more conservative

Scientists should take the conservative approach when searching for habitable zones where life-sustaining planets might exist, according to James Kasting, Evan Pugh Professor of Geosciences at Penn State, including when building ...

A type of wasp that cannibalizes its sibling larvae

A pair of researchers at Kobe College has found that in one species of wasp, cannibalization of sibling larvae is common. In their study, published in PLOS ONE, Yui Imasaki and Tomoji Endo describe the insects and what they ...

Astronomers identify three extrasolar planets

(Phys.org) -- It's not little green men, but it could be a step in that direction: Cornell astronomers, using data from the NASA Kepler Mission, have identified three Earthlike planets orbiting their own suns, all of which ...

Planets can alter each other's climates over eons

A new study sheds light on how exoplanets in tightly-packed solar systems interact with each other gravitationally by affecting one another's climates and their abilities to support alien life.

Search for alien signals expands to 20,000 star systems

The search for radio signals from alien worlds is expanding to 20,000 star systems that were previously considered poor targets for intelligent extraterrestrial life, US researchers said Wednesday.

First 'directed' SETI search comes up empty

(Phys.org)—Researchers working on the Search for Extraterrestrial Intelligence (SETI) project have completed their first "directed" search of a part of space and report in a paper they've uploaded to the preprint server ...

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