Skip to main content Skip to navigation


What was the largest dinosaur? -Carlos, Visalia, California

About 85-feet long (half a football field) and 65 tons (about 7 T-Rexes), the largest dinosaur scientists know about is Dreadnoughts. She was a plant-eater and with her 37-foot-long neck probably had no problem reaching the leaves at the top of trees.

Bug hearts and ganglia

Take a look inside a bug and you’ll find one brain in its head and other little brains called “ganglia” along its whole body. These tiny control centers help insects see, taste, and smell. They also help them quickly escape threats, like other bugs.

“If you had little brains everywhere else, you would also be much quicker,” says bug expert Laura Lavine. » More ...