Joe Rao is a broadcast meteorologist and an associate and lecturer at the Hayden Planetarium in New York City.
A nation is deļ¬ned by what it preserves.
The way they live, the food they eat, and the effect on us
A true but unlikely tale
Story and Photographs by William Rowan
Increasing day length on the early Earth boosted oxygen released by photosynthetic cyanobacteria.