co2
From NASA to your table: A history of food from thin air
A fairly old idea, but a really good one, is about to hit the store shelves.
Why CO2 from Volcanoes Is Definitely Not the Issue
Do volcanoes contribute a significant amount of CO2 to the atmosphere compared to humans?
Scientists Accidentally Create Simple Solution to Global Warming
Global warming is largely caused by carbon dioxide. Scientists at Oak Ridge National Laboratory just figured out a way to change it into something better.