Are you marching for science a week from Saturday?  Click here!  (“Atmospheric CO2 concentrations are now on pace to double this century, reaching the highest levels in 50 million years. Without further action, we’re headed to a point of no return for the planet.”)

But here for 11 minutes of good news:

If astronauts on a little spaceship to Mars can recycle the CO2 they exhale into food they consume — with the help of some microbes whose name I can’t pronounce — what if the soon-to-be 10 billion astronauts aboard our little spaceship Earth could do the same thing?  Taking carbon dioxide out of the air and turning it into food?



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