259K views · 638 reactions | These free, student-friendly videos will be the perfect addition to your science lessons where kids can learn about the northern lights and much more! Subscribe to our YouTube channel for more!   | McGraw Hill PreK-12 | Facebook

🏆Best of Crash Course: Our very first Crash Course video, The Agricultural Revolution: Crash Course World History, is one of the most beloved. This opening sequence about the importance of learning encapsulates why we do what we do! To see that it resonates with so many of you as well never ceases to warm our hearts! Watch the full video for another all-star Crash Course clip "the journey of a double cheeseburger" https://youtu.be/Yocja_N5s1I | CrashCourse

Cockroaches are nature’s crash test dummies -- and they're inspiring new designs for robots: http://scim.ag/2CaGlJb | Science