1998 – Trudeau’s brother, Michel Trudeau, is killed in an avalanche while skiing. 1999-2002 – Teaches high school math and French in British Columbia. 2000 – Trudeau’s father dies of prostate cancer.

Take, for example, the “sofa problem”: a conundrum that has both stumped mathematicians for decades, and also been “solved” ...

Modeling how cars deform in a crash, how spacecraft responds to extreme environments, or how bridges resist stress could be made thousands of times faster thanks to new artificial intelligence that ...