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ClimateCooling climate ‘consensus’ of 1970s never was
Myth often cited by global warming skeptics debunked.
By Sid Perkins -
Health & MedicineVitamin D deficiency
Parkinson’s disease patients are more commonly lacking in vitamin D than Alzheimer’s patients or healthy people.
By Nathan Seppa -
SpaceA comet doubleheader
Astronomers have discovered the first comet that appears to be a contact binary — two chunks somehow held together by a narrow neck of material.
By Ron Cowen -
SpaceAskew in the outer solar system
A chunk of ice orbiting backwards around the sun could offer hints about the mysterious origin of some comets.