Could iron dropped in the ocean combat climate change?

It reads more like science fiction than any real solution to global warming: Fertilizing the sea to create plankton blooms that suck heat-trapping carbon dioxide out of the air.

Yet two U.S. companies are moving toward doing just that by sprinkling particles of iron over vast swaths of the ocean.

As few viable solutions emerge to slow global warming, some scientists say such measures may become increasingly necessary, although they warn that far more research needs to be done to understand the effectiveness and ecological impact of such plans.

Source:  Boston Globe

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