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Letters
NASA budget blunder My thanks and admiration to Ron Cowen for writing about NASA’s “culture of deception” in his recent article on the James Webb Space Telescope mission (“Star cents,” SN: 4/9/11, p. 22). If the astronomy community (and Congress) had decided years ago that spending $7 billion or $8 billion on JWST would be […]
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Freon: Destroying the ozone layer?
Scientists discovered in the 1970s that chlorofluorocarbons such as Freon were hurting Earth’s ozone layer.
- Genetics
Flexible DNA computer finds square roots
Scientists design a digital circuit made of molecules that may be able to crunch a wider variety of complex math problems than previous versions.
