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carbon capture

Tracy Samilton / Michigan Radio

Aptly enough, it was 60 degrees in Michigan, in December, the day that 195 nations agreed to take steps to reduce carbon emissions.

Carbon dioxide from those emissions is heating the atmosphere, melting glaciers, and increasing sea levels.

In Ann Arbor, several hundred people joined a "Michigan Climate March," not to protest the accord, really, but to demand that governments go further.

At a rally following the march through city streets, participants held aloft signs bearing messages like, "I Love Clean Air," and "This is a Crisis." 

Tracy Samilton / Michigan Radio

Coal is an abundant source of energy.  But burning it spews billions of tons of climate-warming CO2 into the air every year.

Much hope has been placed on a developing technology known as carbon capture and sequestration (CCS).  The idea is to extract the carbon before it’s emitted from smokestacks, compress it, and store it underground. 

That could allow humans to keep using coal, without further loading the atmosphere and oceans with more CO2.