Flaco the escaped zoo owl can remain in the wilds of NYC

For two weeks, an owl that escaped from New York's Central Park Zoo has flown from treetop to treetop, eluding capture and amassing legions of fans worried about its ability to survive alone in the big city.

Carbon capture: how does CO2 removal work?

With global temperatures still on the rise, even the most sceptical of scientists agree that carbon dioxide removal (CDR) is crucial to meet the Paris Agreement goal of capping global warming below two degrees Celsius.

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