This activity is about the lever as a basic tool. The ancient Egyptians used levers in building the pyramids. Although it is not known exactly how they erected the great obelisks, it's a pretty ...

It’s all about the design of this nifty oil dispenser. The secret is the gravity sensor lid. Tip the bottle, and the spout ...

New Brunswick’s most powerful lever in Canada’s trade war with the United States is found mostly along the province’s back ...