Every modern mask today has a low volume, easy to hold nose pocket for quick ear equalization. Alec shows how early masks evolved and tried many ways to equalize before the todays nose pocket became the standard.
*** In this episode… Read More...
Snorkelers, surfers, divers. They all use them… wetsuits! So how do they work to keep you warm? It turns out layers of materials, and water itself!
Hosted by: Olivia Gordon
----------
Support SciShow by becoming a patron on Patreon:… Read More...
