美国国家地理HowThingsWork8个短视频
EPISODE 0 - How Things Work with Kamri Noel
EPISODE 1 - HOW 3D PRINTERS PRINT
EPISODE 2 - HOW LAVA LAMPS WORK
EPISODE 3 - HOW DIGITAL CAMERAS WORK
EPISODE 4 - HOW GECKO FEET WORK
EPISODE 5 - HOW FITNESS TRACKERS WORK
EPISODE 6 - HOW SUBMARINES WORK
EPISODE 7 - HOW POPCORN WORKS