Greenhouse gasses in the atmosphere are normal. Present levels of greenhouse gasses are not.
We need the greenhouse effect or the Earth would be too cold for life. But to continue to add those gasses could lead to a runaway greenhouse effect. See Venus.
"Could lead"? Shouldn't you be saying "will lead"?
"Could" is correct. Not many 100% locks in science. Especially climate science. Earth processes and extremely dynamic and interdependent.
Al Gore is still laughing at all the "suckers" to whom he sold carbon credits for millions...while all the time he's flying around in a private jet...and just one of his houses uses more energy in a month than each of us does in a year. Nice gig if you can get it.
Al made out like a bandit.
A fact is an observation. A law is a description. A theory is an explanation.
The scientific method is a process to test a hypothesis.
There is no proof in science.
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