Two astronauts aboard the International Space Station began their fourth and final space walk early Saturday to finish a series of repairs aimed at extending the functioning of a cosmic ray detector attached to the spacecraft.

The planned six-and-a-half-hour foray outside the space capsule began shortly after 7:00 a.m. ET and was being shown in a live video feed from NASA.

When Aysha Renna decided last month to demonstrate against India's new citizenship law on her college campus in New Delhi, it never occurred to her that doing so might be dangerous.

When I met Tom Railsback a few years ago, he told me he'd worried about going to a Chamber of Commerce meeting in Peoria in the fall of 1974.

Tom Railsback of Illinois was a middle-aged Republican congressman from the middle of a state in the middle of America when he was on the House Judiciary Committee in 1974 that heard the case for impeachment against President Richard Nixon.

Mr. Railsback greatly admired President Nixon. "His opening of the door to China," he told me, "had to be the most brilliant foreign policy move ever."