U.N. Secretary-General Ban Ki-moon has urged governments to speed up slow-moving talks to forge a joint response to global warming and warned that climate change was an "existential challenge for the whole human race.
ກອງປະຊຸມການປ່ຽນແປງ ຂອງອາກາດແກ່ຍາວໄປ ກາຍກໍານົດ 1 ມື້
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Aspen, the most widespread tree in North America, is suffering from what scientists call sudden drought-induced death from climate change. (Credit: Kimberly Pham)
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The sudden Colorado aspen tree die-off near Fairplay, Colorado in 2009 has been linked to climate change. Photo credit: William Anderegg
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火力发电厂用煤发电给空气造成污染
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Forests around the globe are at risk from climate change like forest die-off in Spain because of a drought. Photo credit: Rafael Navarro-Cerrillo
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