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EarthWhen testosterone gets down and dirty
Testosterone excreted by livestock can pass through soils, which may explain new findings of fish-altering hormonal activity in water downstream of cattle feedlots.
By Janet Raloff -
AstronomyX-ray images highlight galaxy collisions
A new study provides graphic evidence that X-ray observations may be the best way to identify ancient collisions between galaxies.
By Ron Cowen -
Health & MedicineSARS vaccine triggers immunity in monkeys
An experimental vaccine against the SARS virus shows promise in a test on monkeys.
By Nathan Seppa -
19365
I do not know about the rest of your readers, but I do “hear” at least some low frequency sounds, but not with my ears.