An Earth made verdant by greenhouse gases brings its own dangers

时间:2019-03-28 04:06:01166网络整理admin

Matthew Williams-Ellis/Getty Half our planet’s vegetated surface has become significantly greener in the past three decades. Plants in many regions – from stocky shrubs of the Arctic to towering trees of the rainforest canopy – are growing more and bigger leaves, according to the latest evidence. Leaf for leaf, it’s as though 4.4 billion giant Sequoia trees have been added to the Earth. This sounds like good news, but there is a sting in the tale. In the short term, this may buy us a little time, but the Artic is also greening rapidly,