Carbon dioxide is what's known as a "greenhouse gas" because it tends to prevent the re-release of heat energy radiated to us by the sun. Higher amounts of CO2 lead to greater retention of heat energy and thus an increased temperature on earth. That much is true. What's debatable, however, is how much of the increased CO2 has human origin, how severe of an effect it has on the planet, if anything needs to be done about it, and if so, what.
Edit: ironically, the ecolibs have it all wrong. Here are some huge ways to reduce atmospheric carbon dioxide:
1. Nuclear power. This is simply the best form of power generation available. Clean, safe, low-carbon, low space footprint (at least compared to wind or solar), and efficient. But the NIMBY idiots still think nuclear power is the boogeyman.
2. Landfills. Putting plastics and other hydrocarbons into landfills creates a carbon sink, tying up excess carbon and preventing it being released as carbon dioxide.
3. Treat trees as a crop. Trees take up a lot of carbon dioxide in their first fifty or so years of life, around 1500 lbs on average. After that, though, they don't take up much at all, and when they die, they rot or burn and all that carbon gets released. A tree farm just sucks up carbon, and the lumber from it acts as a carbon sink.
Quoted:
Quoted: All fossil fuels have carbon that was at one time, CO2 in the air. What we have released so far is a TINY percentage of the total. And nature is compensating.
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Ultra deep drilling has proven that fossil fuels are not "fossil fuels".
The last thing I want to do is argue with the arfcom god of knowledge. But all oil is not made of dead plants and biomass.
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As far as I know, abiogenic origin of petroleum is not scientifically supported. IIRC, petroleum is thought to have come from algae and plankton, whereas land plants formed coal.