Agence France-Presse: Experiments that try to simulate global warming's impact on plants badly underestimate what happens in the real world, according to a study published on Wednesday in the journal Nature. The investigation backs anecdotal evidence from farmers and gardeners, especially in the northern hemisphere, who say seasonal plants are stirring into life far earlier than in the past. Artificial experiments into global warming usually entail encasing a plant in an open-top greenhouse-like chamber, or in a...
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