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Science  04 Jun 1999:
Vol. 284, Issue 5420, pp. 1583
DOI: 10.1126/science.284.5420.1583b

Wonders of the world. Must-sees include volcanoes and glaciers, and you should also try to fit in Africa's Great Rift Valley and Russia's Lake Baikal, the world's deepest lake. Those are a few destinations on “A Geologist's Lifetime Field List,” an online article with links for virtual travelers.

Hungry for you. When a neutron star or black hole gobbles matter from a companion star, copious x-rays are given off, marking in the sky what's known as an x-ray binary. The Kilohertz QPO (quasi-periodic oscillations) Pages log recent papers and observations of x-ray binaries.∼ecford/qpos.html

Ligand primer. Need a quick reference on sigma-bond metathesis, hydrozirconation, or other chemical reactions in which metals and organic molecules hook up? Try this Organometallic HyperTextBook.

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