2:19Does gravity work differently at different places on Earth?Gravity isn’t uniform everywhere on Earth. You weigh more at the poles, for instance, than at the equator. Why? This viewer question comes from Ola B. in Egypt.
2:00Why and how do snakes shed their skins?All snakes regularly renew their outer layer, and molting can take days. Why do they do it? This viewer question comes from Anahita C. in India.