How Things Work

Kamri Noel asks National Geographic Explorer, marine biologist David Gruber, to explain how submarines dive underwater, navigate through the sea, and float back to the surface.

Kamri Noel and National Geographic’s David Gruber discover what makes geckos stick by getting a close-up view of the tiny hairs that cover gecko feet.

How does popcorn transform from kernel to fluffy snack? Kamri Noel and National Geographic’s Asher Jay watch it happen up close and in slow motion.

Kamri Noel finds out what makes up the "lava" inside her lamp with Nat Geo Explorer Asher Jay, then discovers something cool about those substances.

Kamri Noel wants to know how fitness trackers count your steps, so Nat Geo’s Cody Goldhahn breaks it down or us.

3-D printers work with metal, ceramic, even living tissue! Kamri Noel asks her very own expert, mechanical engineer Cody Goldhahn, how it's possible.

Kamri Noel and National Geographic’s photo engineer Tom O’Brien explore the basic mechanics of digital cameras by taking photos with different shutter speeds.

Kamri Noel and National Geographic’s Tom O’Brien learn how trebuchets use stored energy to launch objects through the air.