Ocean Fertilization
The idea of Ocean Fertilization is based on the ability of ocean plankton to absorb carbon dioxide and release oxygen into the atmosphere. If you feed plankton with nutrients and minerals, like iron, they’ll grow, meaning they can take up more carbon dioxide.
Manmade Volcanoes
Massive volcano eruptions can serve to cool down the Earth; the tremendous amounts of particles and gases they emit circle the globe, and shield solar rays.
Then why not trigger some volcanoes or manmade earthquakes? The venerable British Royal Society — once led by Sir Isaac Newton — is backing research into the idea.
Space Frisbees
According to Roger Angel, an astronomy and optics professor at the University of Arizona, we could use 20 giant electromagnetic guns, which would shoot Frisbee-size ceramic disks, 800,000 disks every five minutes, nonstop for 10 years. But not just for fun, the point of this would be to block solar rays.
CO2 Scrubbers
We could also simply scrub the planet free from carbon dioxide. A team of American scientists are creating a prototype device to do just that. They claim their device will capture one ton of CO2 from the air every day.
“Burping Tanks” for Cows
“Emissions” from both ends of cows and other livestock are responsible for up to 25% of “manmade” methane releases. Methane is more than 20 times more potent a global warming gas than carbon dioxide. In fact, the average cow emits between 80kg and 120kg of methane a year.
Scientists in Argentina are strapping plastic tanks to cows, to measure the output and get a better read on the problem. One day farmers will be collecting cow emissions and using them to fuel machinery – or better yet, farmers will be “engineering” livestock feed to reduce emissions.
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