The specter of global conflict lurks on the horizon. Energy prices are putting the squeeze on millions. Covid lingers. But at the yachting world's most glamorous event, it's business as usual.

Roger Federer has had an illustrious career in tennis, filled with elegant play and love from around the world. But on one day in 2009, the 20-time grand slam winner couldn't stop laughing at former CNN Sport correspondent Pedro Pinto's Spanish.

Twenty-time Grand Slam champion Roger Federer has announced he will retire from professional tennis. CNN's Patrick Snell looks back at the career of one of tennis' all time greats.

After defeating Norwegian Casper Ruud in four sets to win the US Open title, Spain's 19-year-old Carlos Alcaraz earned his first grand slam title with the win and will become the youngest world No. 1 in the history of the ATP rankings with the victory. CNN's Carolyn Manno speaks to Alcaraz following his big win at the US Open.

Ben Johns, the world's best pickleball player, walks CNN Sport's Carolyn Manno through the ins and outs of the growing sport, which has roots in tennis, ping pong and badminton.

Serena Williams has announced she will be retiring from tennis after the 2022 US Open. CNN's Christina MacFarlane looks at her journey from teen sensation to being one of the sport's all-time greats.

This month, Ukrainian tennis player Elina Svitolina became an ambassador of UNITED24. Ukrainian President Volodymyr Zelensky launched U24 in the wake of the Russian invasion. The foundation is the main avenue for collecting charitable donations in support of Ukraine's defense.

Air pollution spiked to unhealthy levels around the world in 2021, according to a new report.

Lake Powell, the second-largest human-made reservoir in the US, has lost nearly 7% of its potential storage capacity since 1963, when Glen Canyon Dam was built, a new report shows.