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Is climate change primarily caused by human activity?

The overwhelming majority of weighted, peer-reviewed evidence supports that observed warming since ~1850 is primarily driven by anthropogenic greenhouse-gas emissions. Remaining…

Climate science6 citations

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Strong consensus · No

Do childhood vaccines cause autism?

The weighted evidence overwhelmingly refutes this claim. Large, independent population studies across multiple countries find no association between childhood vaccination and au…

Medicine5 citations

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Full consensus · Yes

Did the universe begin with a Big Bang ~13.8 billion years ago?

Independent observational pillars — the cosmic microwave background, the abundances of light elements, and the redshift–distance relation — converge tightly on the hot Big Bang…

Cosmology5 citations

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