08/01/2014

Pigments reveal extinct reptiles' dark side

What did Tyrannosaurus rex really look like? Depending on which artist's impression you look at, the carnivorous king of the Cretaceous was a dull grey, an earthy brown, maybe a dark green... perhaps it was ochre, or even ...

NASA extends space station life to 2024 (Update 2)

The $100-billion International Space Station will be extended by four years, or until at least 2024, allowing for more global research and scientific collaboration, NASA said Wednesday.

Molecular engines star in new model of DNA repair

Our health depends in large part upon the ability of specialized enzymes to find and repair the constant barrage of DNA damage brought on by ultraviolet light radiation and other sources. In a new study NYU School of Medicine ...

Negative feedback makes cells 'sensitive'

New research has shown that negative feedback loops in cell signalling systems can be essential for a cell's ability to perceive the strength of a growth stimulus. Cells lacking the feedback loop became insensitive to the ...

Many small exoplanets found to be covered in gas

During its four-year mission, NASA's Kepler space telescope discovered thousands of "planetary candidates" in our Milky Way galaxy—the vast majority of which are almost certainly actual planets. But before scientists can ...

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