eli5: why is co2 trapping more heat than it blocks

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Hello,
I am wondering why global warming is explained with heat bouncing back instead of going to space (that’s what I remember from school). However if that is the case should it not block alot or sunrays too?

Edit:
Just a clarification I am not a global warming denier, I just want to understand better.

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5 Answers

Anonymous 0 Comments

CO2 gets excited by (more or less) infrared. CO2 will absorb infrared, then disperse it in every direction. So only some of the infrared will continue to space and some will get bounced back. If there is no CO2 then everything will be shot to space (in an ideal scenario).

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