Trebuchet trials, magic paper, lift your parent? Explore the concept of levers, how they work, and how they’re used. STEM Challenge: build a “Paint Paddle Catapult” to demonstrate the concept and function of this type of lever. Episode 202.
The axolotl lives in only one place outside captivity: the waters of Lake Xochimilco, in Mexico City. Now, a team of scientists is working to secure its future by looking to its past.