Emma Bowman

For the past three weeks, students across India's capital have been attending a radical new course: happiness.

The Delhi government introduced "happiness classes" in an effort to shift the country's academic focus from student achievement to emotional well-being. In a country that uses standardized testing to determine student success, offers a limited number of seats in top universities and sets high expectations, educators have been seeing mental health consequences.

LeBron James is leaving the Cleveland Cavaliers for a 4-year, $154 million deal with the Los Angeles Lakers.

His agency Klutch Sports Group announced the move in a release on Sunday, less than 24 hours after the NBA's free agency market opened.

For the second time in his 15-year career, James will part with his home state team. In 2010, the free agent bolted to the Miami Heat to win two titles over four years, before returning to Cleveland.

On Sunday, Colombia elected a new president, Ivan Duque, a conservative former senator who's pledged to rewrite a divisive peace treaty that ended the country's 50-year-old guerrilla war.

In the second and final round of elections, Duque won 54 percent of the vote, defeating former guerrilla fighter and onetime Bogota Mayor Gustavo Petro, 58, who captured about 42 percent in the runoff. Duque will succeed outgoing President Juan Manuel Santos.

Kittie Weston-Knauer, on the cusp of 70 years old, is the oldest female BMX bicycle racer in the U.S.

When she started competing in the late 1980s, she was often the only woman on the track. It was her son, Max Knauer, a champion BMX rider, who introduced her to the sport when he was 10.

Max, now 40, explains that he planted the racing seed after a frustrating day of his mom playing coach.

Roxanne and Dennis Simmonds knew their son as fearless and strong from the day he was born.

"D.J. came out with shoulders of a linebacker," Roxanne says. "He was the first baby I saw that had muscles."

"He wasn't really afraid of anything," Dennis says.

At night, young D.J. would take the dog with him and circle the entire house, to "make sure there's nobody on the grounds," Dennis says, laughing. "I used to say, 'D.J. where you going? It's late.' He would say 'I'm doing a perimeter search, Dad.' "

Updated at 1:26 p.m. ET on Monday

A helicopter carrying six people crashed into New York City's East River on Sunday evening, killing all five passengers. The pilot managed to escape.

"The pilot freed himself. The other five did not," FDNY Commissioner Daniel Nigro said in a news conference Sunday night.

Most people familiar with "face-swapping" know it as an innocuous social media feature. An algorithm captures a person's face and pastes it onto someone else's. The result is rarely seamless and often funny.