Get ready to discover Brazil and São Paulo like you've never seen it before.
(01:34)Thirty mountaineers reach Camp 4 on their trek to the summit of K2―the world’s most dangerous mountain.
(02:29)Could you tell a Venetian from a tourist? Students in Venice are tallying the foot traffic in order to help preserve the city.
(03:08)Engineers consider chopping the Costa Concordia into smaller sections in order to remove it from the reef off of the island of...
(02:58)The trip on the Yukon nears an end, and the teams gear up for the last leg - the rapids.
(01:48)Marty and Willi try and hunt some meat for the group, but can Willi’s gun shoot true?
(02:18)Marty and Matt are trapped on the wrong side of the river and time runs short to get to the LZ.
(01:07)The Seavey brothers push their way through bear country brush on the way to the LZ.
(01:52)Fresh snowfall on Day 2 keeps Tyler and Austin on edge.
(02:04)Marty and his inexperience take on river currents with deadly consequences.
(02:27)Tyler Johnson is a civil engineer who spends his free time pushing himself to the limit in the wilderness.
(01:19)Fisherman Tyrell Seavey comes from a family of legendary Alaskan adventurers.
(01:16)Survivalist Austin Manelick is willing to scavenge to avoid going hungry in the wilderness.
(01:19)Dallas Seavey, the youngest ever Iditarod champion, brings a racer's sense for speed and efficiency to the expedition.
(01:08)Austin Manelick shares his thoughts while on the first leg of the expedition through the Brooks Mountain Range.
(01:15)Brent Sass describes the expedition down the Yukon River.
(01:52)Willi Prittie shares his thoughts while on the expedition through the Tordrillo Mountains.
(02:05)Marty Raney describes the trip through the Valley of Ten Thousand Smokes to Katmai Bay.
(03:03)Tyrell Seavey describes the exploration of Nunivak Island.
(00:59)The teams hit the river in a push to make the LZ, but the river aims to claim a victim.
(02:23)