Today's antipersonnel land mines are small and often have plastic casings that standard metal detectors cannot register.
Animals don't experience the world passively. A hawk tilts its head to track prey. A person leans forward to read a sign.
Evolution is always happening — so why can't we see it? A biologist explains the timescale problem, election pressure, and ...
Animals don't experience the world passively. A hawk tilts its head to track prey. A person leans forward to read a sign.
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