Five years ago, mathematicians Dawei Chen and Quentin Gendron were trying to untangle a difficult area of algebraic geometry involving differentials, elements of calculus used to measure distance ...

TV presenter Savannah Guthrie has filmed an emotional video alongside her siblings appealing for the return of her missing mother Nancy and demanding proof "she is still alive". Democrats demand ICE ...

The body of two students of a private college who had drowned at Kovalam beach on Sunday evening were retrieved by the police. Search operations are continuing to trace the third student who had been ...

EXCLUSIVE: Limited-government nonprofit Americans for Prosperity kicked off its version of an America250 project with a $20 million "One Small Step" initiative, hosting the first of 12 marquee events ...

US broadcaster Savannah Guthrie has posted an emotional video to Instagram appealing to the potential abductor of her mother, Nancy Guthrie, who was reported missing on Sunday. Nancy, 84, was last ...

Graham Kates is an investigative reporter covering criminal justice, privacy issues and information security for CBS News Digital. Contact Graham at KatesG@cbsnews.com or grahamkates@protonmail.com ...

Savannah Guthrie’s sister is believed to be the last person who saw their now-missing mom just hours before she was allegedly snatched from her bed, according to a report. Annie Guthrie reportedly ...

Investigators say 84-year-old Nancy Guthrie was likely taken from her Arizona home NBC anchor Savannah Guthrie’s 84-year-old mother, Nancy (right), is "missing", believed to have been "abducted". The ...

Large language models struggle to solve research-level math questions. It takes a human to assess just how poorly they perform. By Siobhan Roberts A few weeks ago, a high school student emailed Martin ...

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TUCSON, AZ (AZFamily/CBS News/AP) — The family of missing Nancy Guthrie released Wednesday night a video through social media asking for proof of life as the search for the missing 84-year-old ...