Brown biologist solves mystery of tropical grasses' origin
Tuesday, February 9, 2010 - 09:35
in Physics & Chemistry
Around 30 to 40 million years ago, grasses on Earth underwent an epic evolutionary upheaval. An assemblage capitalised on falling levels of atmospheric carbon dioxide by engineering an internal mechanism to concentrate the dwindling CO2 supply that, like a fuel-injection system in a car, could more efficiently convert sunlight and nutrients into energy...