This really changes things.
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Females choose the male that makes the longest, most powerful and most frequent noise because it indicates greater reproductive quality.
The finding, made in mice, would explain why not all individuals infected by Toxoplasma gondii develop symptoms.
Water melting under glacial ice, and not by free-flowing rivers as previously thought, was what carved the large number of valley networks that crisscross the surface of Mars.
This is what a new study suggests...