Harmless Holder Hand-On Challenge

摘要

Engineers work to make the world, and the planet, a better place. They make products more biodegradable, develop methods to harness energy, and make water safe for people to drink. In the Harmless Holder activity from Design Squad Nation, kids will see one way in which engineers work to eliminate dangers to animals in the environment. Animals can get tangled in plastic six-pack rings and then cannot get free.