Yijia Chen
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“Give me a half tanker of iron, and I will give you an ice age.” His “iron hypothesis,” put forth in a landmark 1990 paper, was that as the planet cooled during glacial periods, stronger winds picked up dust from drying continents and carried it deep into the oceans. Iron makes up about 3.5% of dust, and as the mineral reached the seas, it might have spawned massive phytoplankton blooms. These, in turn, would have sucked up carbon dioxide and buried it in the ocean, magnifying cooling.
These startups hope to spray iron-rich particles above the ocean to fight climate change | MIT Technology ReviewA 40% decrease in methane concentrations by 2050 would shave about 0.4 °C off global warming, a 2021 study found.
These startups hope to spray iron-rich particles above the ocean to fight climate change | MIT Technology Review