In 1876, Peter Guthrie Tait set out to measure what he called the “beknottedness” of knots. The Scottish mathematician, whose research laid the foundation for modern knot theory, was trying to find a ...

SACRAMENTO, Calif. (AP) — California Gov. Gavin Newsom on Friday extended a signature state program aimed at reducing planet-warming emissions through 2045, a move Democrats cheered but Republicans ...

California Gov. Gavin Newsom hosts a press conference and signs a slew of climate initiative bills at the Academy of Sciences, Friday, Sept. 19, 2025, in San Francisco. (AP Photo/Camille Cohen) ...

California Gov. Gavin Newsom on Friday extended a signature state program aimed at reducing planet-warming emissions through 2045, a move Democrats cheered but Republicans warned would raise gas ...

SACRAMENTO, Calif. (AP) — California will extend a key climate program under a bill state lawmakers passed Saturday, sending the measure to Gov. Gavin Newsom, who has championed it as a crucial tool ...

Copyright 2025 The Associated Press. All Rights Reserved. Copyright 2025 The Associated Press. All Rights Reserved. California will extend a key climate program under ...

Sean Cudahy is an aviation reporter covering news about airlines, frequent flyer programs and consumer travel issues. The cards we feature here are from partners who compensate us when you are ...