Photosynthesis

Habitats with fewer plant species produce less oxygen, food, fiber overall.

Microbes may have been pumping out oxygen 2.5 billion years ago.

Droughts may not hurt Amazon rainforest as much as previously thought.

Volcanoes helped oxygen accumulate in Earth's atmosphere.

A light-harvesting bacterium dwells in Yellowstone's hot springs.

A decade worth of satellite imaging data has shown for the first time that global warming could devastate marine life, scientists announced today.

Newfound bacterium is the sort of thing that might thrive on other planets.

Better estimates of the production of phytoplankton shed light on greenhouse gas consumption.