ScienceClaims rejecting Carl Sagan’s views on Venus and the greenhouse effect
A post claims Venus’s heat comes from atmospheric pressure rather than the greenhouse effect, and attributes Earth’s recent warming to cloud changes unrelated to human carbon emissions.
TLDR
A post disputes Carl Sagan’s understanding of Venus, claiming its heat comes from pressure-induced heating independent of atmospheric composition. It also claims reduced cloud reflectivity driven by “cosmic forcing,” rather than human carbon emissions, caused Earth’s recent warming. The author invokes modern NASA observations and cites papers from 2017 and 2024 to support those assertions.
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Claims rejecting Carl Sagan’s views on Venus and the greenhouse effect
A post claims Venus’s heat comes from atmospheric pressure rather than the greenhouse effect, and attributes Earth’s recent warming to cloud changes unrelated to human carbon emissions.