posted by Suzie Chhouk
It's getting colder now due to the tilt of the Earth. This is a very massive mechanism. How about the cold packs that can fit in the palm of your hand? How do can they become instantly ice-cold? John Pollard explains in the video below.
Want to try to make your own? Click 'Read more'!
from TEDEd
Want to try to make your own? Click 'Read more'!
from TEDEd