Attenuated T2 relaxation by mutual cancellation of dipole-dipole coupling and chemical shift anisotropy indicates an avenue to NMR structures of very large biological macromolecules in solution. By Konstantin Pervushin, Roland Riek, Gerhard Wider, and Kurt Wüthrich
Paper by Hansen and Sato (PNAS 2001;98:14778) makes the case for an increased focus on methane and aerosols in the short-term in order to mitigate climate change.
The Proceedings of the National Academy of Sciences Online (U.S.)
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The Proceedings of the National Academy of Sciences Online (U.S.)
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PNAS. Beginning January 2002, PNAS research articles and papers published online before print in PNAS Early Edition are available only to paid subscribers for six months. All articles from 1990 through 2001 remain freely available.