biosphere

Artist's impression of the planet Kepler-168b in a habitable, rocky, potentially habitable zone. Credit: NASA Ames/NASA/JPL–Caltech/Tim Pyle (Caltech)

The nearest extraterrestrial civilization may be 33 light years away

New study suggests intelligent life is rare for the Milky Way – and if another civilization exists, it is much older than us
Biomass in the world: who has more? Infographic: Yael Shinker, Weizmann Institute Magazine

The Census of Life on Earth: The Trees Still Rule