Friday, January 25, 2008

Science, January 18, 2008


Cover
Laser-surveyed topography of the elevation in a Pennsylvania landscape, showing evidence of sediment-filled early American millponds along a stream valley. Terraces around the stream channel descend stepwise from upstream to downstream (dark purple, light purple, pink), each associated with a dam. The deeper stream incision into the two downstream terraces is due to more complete dam breaching.

Gene Tests for Psychiatric Risk Polarize Researchers
A small California company is the first to venture into psychiatric gene testing. But is the science ready?

Seeking the Roots of Ritual
In the hills of Turkey, researchers are slowly uncovering the world's oldest monumental structures, strange monoliths built by hunter-gatherers perhaps 11,000 years ago.

Arabidopsis CLV3 Peptide Directly Binds CLV1 Ectodomain
Peptides that maintain the stem cells in the shoot apical meristem of Arabidopsis act by binding to the extracellular portion of a receptor-like kinase.

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