CO2

Scientists have repeatedly touted the possibility of turning algae into biofuels. Now a Florida-based company called Algenol is working with Dow Labs in Texas to convert carbon dioxide produced by algae farms into ethanol, which will then be used to make plastics. Even better, the oxygen byproduct left over from the conversion can be used to produce cleaner, more efficient coal power.

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Global warming is far and away the symptom at the top of the list of indicators that our planet is overloaded with carbon dioxide. Another important, but less considered consequence of the excess CO2 is the effect it has on the world's oceans. The oceans are a natural carbon dioxide sponge, responsible for maintaining the balance of CO2 in the atmosphere by absorbing a measure of the gas in its water. Currently, it is estimated that the ocean is uptaking nearly one-third of all human-produced CO2, which is slowly lowering its overall pH. Put simply: the oceans are becoming acidic.

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A new system for mapping carbon dioxide emissions in the U.S. will help regulators figure out exactly where these emissions are coming from and how best to reduce them. Among human-produced gases that contribute to climate change, carbon dioxide is public enemy number one.

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Make CO2 Ice Cream

Cost: $150
Time: 15 Minutes

Safe | | | | |
Risky

For an illustrated photo how-to, launch the gallery.

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