Antinuclear

Reversing the damage caused to oceans by two centuries of industrial pollution could take thousands of years of the most concerted effort, studies show.
Technology to drain heat-trapping carbon dioxide from the atmosphere may slow global warming, but will not reverse climate damage to the ocean on any meaningful timescale, according to published research.
At the same time, a second study reported, even the most aggressive timetable for reducing greenhouse-gas emissions will need a big boost from largely untested carbon removal schemes to cap warming to 2C above pre-industrial levels.
Above that threshold, say scientists, the risk of climate calamity rises sharply. Earth is on a 4C trajectory.
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Both studies, coming months before 195 nations meet in Paris in a bid to forge a climate…