dioxide

The EPA estimates that the average passenger vehicle emits 5.1 metric tons of carbon dioxide equivalents per year.

Electric power can probably be used to synthesize traditional fuels from carbon dioxide and water, to stay carbon-neutral.

The overall carbon dioxide output of coal-fired electric power plants exceeded gasoline by more than 30 percent in 2010.

It never occurred to me that human-produced carbon-dioxide was such a small percent of the greenhouse gases.

Earth air is mostly a mixture of 72% nitrogen, 24% oxygen, 6% carbon dioxide, and other stuff.

Could humans breathe if they were in an environment that was 78% carbon dioxide and 24% oxygen?

But photosynthesis releases oxygen by breaking up water molecules, so it gradually oxygenated the atmosphere and depleted the carbon dioxide.

Well, carbon dioxide's interaction with infrared radiation would be more studied by physics than chemistry.

There are potentially many benefits aside from the cost of raw materials and the amount of carbon dioxide released into the atmosphere.

The trees transform some carbon dioxide to wood and to part of the soil.

He is currently working with a group of partners on developing and commercializing a technology for extracting carbon dioxide from the air.

So this is good if the sequestered carbon dioxide is more than before.

Plus " sulfur dioxide (SO2) and nitrogen oxides (NOx) are the primary causes of acid rain.

It turns out that it's very feasible; Venus' carbon-dioxide-based atmosphere would be thick enough even at those altitudes to keep a "balloon" filled with an Earth-like atmosphere (nitrogen, oxygen, trace CO2) afloat with little effort.

From your link: "The trigger for these mass extinctions appears to be a warming of the ocean caused by a rise of carbon dioxide levels to about 1000 parts per million." That is fucking miles away.

Author - at the end - proposes a very extreme version of veganism -- cultivating proteins using bacteria feeding them hydrogen, carbon dioxide and oxygen: "Researchers for decades have been producing food conceived for astronauts on the way to Mars by cultivating hydrogenomonas on a diet of hydrogen, carbon dioxide, and a little oxygen.