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Astronomers Might Have Just Solved a Key Mystery About the Origin of Life

If a massive solar storm struck the Earth today, it could wipe out our technology and hurl us back to the dark ages. Lucky for us, events like this are quite rare. But four billion years ago, extreme space weather was probably the norm. And rather than bringing the apocalypse, it might have kickstarted life.

Dumping a Bunch of Iron in the Ocean Won't Fix Our Climate

Geoengineering, or hacking Earth’s climate system to cool the planet, is a controversial field that promises to either save our collective asses or bring on the apocalypse. Now, scientists have discovered a major problem with one popular geoengineering scheme that entails dumping a bunch of iron into the ocean to soak…