Uncategorized
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EarthLack of oxygen stunts fish reproduction
Seasonal oxygen shortages in coastal waters, increasing in severity because of pollution, may impair fish reproduction.
By Sarah Webb -
Virus thrives by hiding
Some viruses create cocoonlike refuges in the cells they invade, shielding them from the cell's defense mechanisms.
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AnthropologyMen’s fertile role in evolving long lives
The ability of men 55 and older to father children may have had evolutionary effects that caused both sexes to develop longer lifespans.
By Bruce Bower -
Health & MedicineHIV is double trouble for brain
The virus that causes AIDS can also cause dementia, by both killing mature brain cells and blocking the creation of new ones.