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Science 12 May 2000:
Vol. 288. no. 5468, p. 975
DOI: 10.1126/science.288.5468.975a
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Letters

This Week's Letters

In response to the suggestion that depression is becoming increasingly common, evidence is cited that shows it "appears to be shifting and concentrating in particular demographic groups, rather than increasing across the board." Changes in Earth's obliquity are suggested to provide an alternative explanation for the dramatic shifts in climate, including low-latitude glaciation invoked in the "snowball Earth" hypothesis, during the Archean and Proterozoic eons. And, the implications of a report on ethanol-induced apoptotic neurodegeneration and fetal alcohol syndrome are discussed.

Letters in This Issue

space space
[Letter] Dialog on Depression
Bruce Charlton; Raj Persaud
[Letter] The "Snowball Earth" and Precambrian Climate
Gregory S. Jenkins
[Letter] Induced Damage in the Developing Brain
Robert W. Montgomery; Abhay Sharma and Sushil Kumar. Response John Olney


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Science. ISSN 0036-8075 (print), 1095-9203 (online)