Bear takes Oscar-winner Natalie Portman into the slot canyons of the Escalante Desert to see if her training for Marvel's Thor: Love And Thunder pays off in the wild.
Bear shows Shang-Chi star Simu Liu how to trigger avalanches, plunge into frozen lakes and traverse alpine terrain as temperatures drop below -20 degrees.
Ashton Kutcher joins Bear to challenge the coastal jungles of Costa Rica. Their adventure begins with a helicopter jump into the Pacific Ocean.
Bear sets up challenges for Florence Pugh in the Costa Rican rainforest.
Anthony Anderson learns mountaineering skills from Bear in the Sierras.
Bear puts Rob Riggle through a series of mountain man survival tests.
Bear Grylls
Host
