From Tallbloke’s Talkshop

‚What is carbon dioxide, anyway? How does it cause global warming?‘ – asks Phys.org. [Delete ‚how‘ – says the Talkshop.] Anyway, the entire article they attach to their loaded-question headline never once mentions water vapour. It’s all about demonising CO2. Even climate worrier Wikipedia says: ‚Water vapour is the gaseous phase of water…Being a component of Earth’s hydrosphere and hydrologic cycle, it is particularly abundant in Earth’s atmosphere, where it acts as a greenhouse gas and warming feedback, contributing more to total greenhouse effect than non-condensable gases such as carbon dioxide and methane.‘ So even for fans of greenhouse theories there’s no escaping the predominance of water vapour over carbon dioxide. Completely ignoring it makes the whole CO2-promoting article redundant.
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Chemically, carbon dioxide is incredibly simple—it is just one carbon atom linked with two oxygen atoms, says Phys.org.

Together they create a colorless gas that makes up just a tiny fraction of the Earth’s atmosphere, about 0.04%.

That gas is critical to life on earth because plants use sunlight and carbon dioxide to create energy through the process of photosynthesis.

But carbon dioxide is also the primary reason the climate is warming, a long-term shift in temperature that threatens the delicately balanced ecosystems humans depend upon.

So how is something so necessary to life also so harmful? Here’s what to know:

Continued here.
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A footnote to the article says:
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