Archive: 5/12/2006

Stretch a DNA Loop, Turn Off Proteins

It may look like mistletoe wrapped around a flexible candy cane. But this molecular model shows how some proteins form loops in DNA when they chemically attach, or bind, at separate sites to the double-helical molecule that ...

dateDec 05, 2006 in
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NASA Telescope Sees Black Hole Munch on a Star

A giant black hole has been caught red-handed dipping into a cosmic cookie jar of stars by NASA's Galaxy Evolution Explorer. This is the first time astronomers have seen the whole process of a black hole eating a star, from ...

dateDec 05, 2006 in Astronomy
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Why The Moon?

If you asked 100 people why we should return to the moon, you'd probably get 100 answers - or more! Over the past year, NASA posed this question not just to 100 people, but to more than 1,000 from around the world. Scientists, ...

dateDec 05, 2006 in Space Exploration
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Measuring awareness is not as simple as a single number

Science fiction describes the crucial difference between a robot and a person as sense of self. But for Rockefeller University’s George Reeke, computers — self or no self — do not yet begin to capture the complexity ...

dateDec 05, 2006 in Other
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Nano-implant measures tumor growth, treatment

A tiny implant now being developed at MIT could one day help doctors rapidly monitor the growth of tumors and the progress of chemotherapy in cancer patients. The implant contains nanoparticles that can be designed to test ...

dateDec 05, 2006 in Bio & Medicine
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