In the end, over 90 per cent of marine life and 70 per cent of land animals were wiped out in the single worst extinction ...

Biomass reveals the real impact and energy flow of life in an ecosystem, like knowing not just the cast of a play, but who ...

I am hiking along the Metacomet Ridge in Greenfield, Massachusetts – a rather steep basaltic structure, modestly less than five hundred feet high and topped by a stately brick tower constructed in ...