For 10 of the findings, OpenAI provided summaries of how the A.I. model came up with its solution. The average result took about three hours of computing, the company said.

Some National Science Foundation divisions pulled back research proposals in order to comply with White House guidance to carry over funds.

Jérôme Dupras, the bass player in Les Cowboys Fringants, one of Quebec’s most famous rock bands, was recently appointed as chief scientist of Quebec.

Argentine security forces seizing a young man in 1982 in Buenos Aires during the Dirty War.

Bryan Hubbell, former head of the air, climate and energy program at the Environmental Protection Agency’s research office. “I knew I wasn’t going to be able to keep doing the work.”

Jacqueline de Ribes in 1953. She designed clothes for herself and for a socially prominent clientele.

The Arkansas Valley Conduit would provide clean water to 50,000 Colorado residents by diverting water from the Arkansas River, seen here at the base of the dam of the Pueblo Reservoir.

Dr. Jeanne Marrazzo, former director of the National Institute of Allergy and Infectious Diseases, testifying before the Senate last year.

President Trump’s budget proposes deep reductions for nearly ever major federal agency, reserving its steepest cuts for foreign aid, medical research, tax enforcement and a slew of anti-poverty programs.