1,474,301 views | Lina Marieth Hoyos • TED-Ed
What is the coldest thing in the world?
The coldest materials in the world aren't in Antarctica or at the top of Mount Everest. They're in physics labs: clouds of gases held just fractions of a degree above absolute zero. Lina Marieth Hoyos explains how temperatures this low give scientists a window into the inner workings of matter, and allow engineers to build incredibly sensitive instruments that tell us more about the universe. [TED-Ed Animation by Adriatic Animation]