A Drier Planet: Plants Won't Save Us From Global Warming, A New Study Suggests
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The last time the atmosphere contained as much carbon dioxide as it does now, birdlike dinosaurs roamed what was then a verdant landscape. The earth's lushness was at least partly caused by the abundance of COâ‚‚, which plants use for photosynthesis. That has led to the idea that more COâ‚‚ in the atmosphere could create a literally greener planet.
Today, plants and soil around the worl...