Milestones

OPENED

One World Trade Center, to its first tenant, Condé Nast. The 1,776-ft. (541 m)building stands steps away from the site of the north tower, which fell on 9/11.

DIED

Thomas Menino, 71, Boston’s longest-serving mayor (from 1993 to 2014). Known for his warm rapport and hands-on approach to problems, he left office with an 82% approval rating.

WON

The New York City Marathon, by two Kenyan runners, Wilson Kipsang and Mary Keitany. Tennis star Caroline Wozniacki also completed the race.

SET

Two records for high-wire walking, by daredevil Nik Wallenda in Chicago. He walked the highest incline on a tightrope and the highest blindfolded walk, in two separate stunts.

RELEASED

By the U.N., its most urgent climate-change report to date, warning that failure to eliminate greenhouse-gas emissions by 2100 could result in “severe, pervasive and irreversible” consequences.

DIED

Bernard Mayes, 85, founder of the first U.S. suicide hotline, in San Francisco. He was also the original chairman of National Public Radio.