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Humans

Federal Citizen Information Center

This unit of the U.S. government provides practical guides and fact sheets, most of which are free, on a variety topics related to particular aspects of health, food, computers, and more. Recent free documents include “Sleep Disorders,” “Sunscreens and Tanning,” and “Internet Auctions: A Guide for Buyers and Sellers.” Go to: http://www.pueblo.gsa.gov

Earth

Ash Detector: Laser device could protect aircraft in flight

Analysis of a volcanic plume that wafted over central Alaska suggests that polarized laser beams can detect airborne ash, which can be a threat to aircraft.

Health & Medicine

Diabetes from Depression: Older adults face dual risk

Adults 65 and older who report depressive symptoms are 50 to 60 percent more likely to develop diabetes than are their peers.