The proof, known to be so hard that a mathematician once offered 10 martinis to whoever could figure it out, uses number ...

The Rasmussen Reports daily Presidential Tracking Poll for Thursday shows that 45% of Likely U.S. Voters approve of President Trump’s job performance. Fifty-three (53%) disapprove. The latest figures ...

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The northern hemisphere stratospheric polar vortex, and thus Arctic column ozone content, is characterized by large interannual variability, driven by the interplay of various chemical and dynamical ...