Episode 21

Big Brother follows a group of people living together in a house outfitted with dozens of high-definition cameras and microphones recording their every move, 24 hours a day. Each week, the Houseguests will vote someone out of the house. At the end, the last remaining Houseguest will receive the grand prize of $500,000.

Survivalists from all over the world - including Brazil, Australia, Mexico, and the United States - represent their homelands in a grueling 40-day primitive bushcraft competition. Paired with a partner, their skills, toughness and teamwork will be tested as they compete for national pride and the largest cash prize in franchise history.

The Mega-Brands That Built America is the newest series in History's "That Built" franchise, telling the origin stories of some of the most successful businesses in history: from mega-stores like Costco and Walmart to sporting goods giants like Spalding and Wilson, titans like Ivory Soap, Schick and Gillette, to shipping giants like Fedex and UPS, and countless more of the biggest brand names in history. Each story is told through the "That Built" franchises' signature blend of expert interviews and archival, mixed with original premium recreations. Through the eyes of the visionaries and entrepreneurs behind the brands, the series takes viewers on a journey; starting with how it all began, following the innovations, the failures, and all the incredible achievements that forever changed the way Americans live. It's everything you didn't know about the colossal brands you know so well.

The eight-episode fast-paced, nostalgia-fueled series will take viewers on a thrilling ride through America's past. 

Shark Week is an annual, week-long TV programming block created by Tom Golden at the Discovery Channel, which features shark-based programming. Shark Week originally premiered on July 17, 1988.