News tagged with dose radiation

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Cosmic rays zap a planet's chances for life

Mysterious cosmic rays constantly bombard Earth from outer space. Now scientists find these energetic particles could limit where life as we know it might exist on alien planets.

Nov 12, 2013
4 / 5 (16) 8 | with audio podcast

To peer inside a living cell

(PhysOrg.com) -- Quantum mechanics could help build ultra-high-resolution electron microscopes that won't destroy living cells, according to MIT electrical engineers.

Oct 06, 2009
5 / 5 (11) 3

Detecting DNA in space

If there is life on Mars, it's not too farfetched to believe that such Martian species may share genetic roots with life on Earth.

Jul 09, 2013
4.8 / 5 (6) 6 | with audio podcast

Gov't says full-body scanners at airports are safe

(AP) -- They look a little like giant refrigerators and pack a radiation dose big enough to peer through clothing for bombs or weapons, yet too minuscule to be harmful, federal officials insist. As the government ...

Nov 18, 2010
2.5 / 5 (8) 5

Primordial fear: why radiation is so scary

Nuclear radiation is frightening stuff. A quarter century after Chernobyl, and more than 65 years after atomic bombs laid waste to Hiroshima and Nagasaki, fatally sickening thousands not killed outright, even ...

Apr 24, 2011
5 / 5 (3) 11