Biology news

How photosynthesis changed the planet

Two and a half billion years ago, single-celled organisms called cyanobacteria harnessed sunlight to split water molecules, producing energy to power their cells and releasing oxygen into an atmosphere that ...

13 hours ago
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What is a heritage turkey?

Over 45 million turkeys are eaten by Americans each Thanksgiving, according to the U.S. Department of Agriculture. Hunters provide some—last autumn, about 24,000 wild turkeys were harvested in Pennsylvania. ...

14 hours ago
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