Brazilian sailor Isabel Swan just found out she’s a torch bearer for the Olympics in Rio this summer. She’s also been heading up efforts to clean up Guanabara Bay’s polluted waters ahead of the Games.
Slideshow: World Championships of Ice and Snow Sailing
We speak with sailor Zac Sunderland about his year-long adventure sailing around the world. He’s one day away from completing his trip?logging about 25,000 miles?the answer to our Geo Quiz.