Researchers go 'cuckoo' over Antarctic penguin poop

Antarctica's king penguins emit such copious amounts of nitrous oxide, or laughing gas, via their faeces that researchers went a little "cuckoo" studying them, according to a Danish scientific study published Thursday.

Development threatens tropical forests, researchers say

Tropical forests in the Amazon, Indonesia, and Mesoamerica face multiple threats from mining, oil, and gas extraction and massive infrastructure projects over the next two decades, according to a study by Clark University ...

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