42:58

I Explored the World's First Nuclear Power Plant (and How It Works) - Smarter Every Day 306

1:53:23

Atlantik Okyanusu’nu dev konteyner gemisiyle geçiyoruz!

33:39

Manhattan’daki En Tehlikeli Bina

29:25

Boarding a US NAVY NUCLEAR SUBMARINE in the Arctic - Smarter Every Day 240

31:16

I Skied Down Mount Everest (world first, no oxygen)