The estimate also comes with a price tag for describing all these Earth species, most of which are still unknown: $364 billion.
A newly discovered species of reef coral hangs from the ceiling of undersea caves like a colony of petrified bats.
The world's 346 seabird species are seeing alarming population crashes.
A diversity of grasses is better than a monoculture of corn for wildlife, making biofuel friendlier than ethanol for the environment.
Teasing apart the effects of noise on birds shows humans are driving their feathered friends away.
Your friendly neighborhood honeysuckle is probably an invasive species -- and that's OK.
Before, the butterflies were found only further south of the New England state.
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