Historians think the 2,000-year-old device was used to predict the positions of celestial bodies. A new digital simulation ...

This complex arrangement of rods and interlocking gears is the hip joint of an immature planthopper insect. It’s the only instance of functioning, interlocking gears that has been found in nature, at ...

Since last week we've been discussing this pattern that would lead to a rather repetitive pattern for this week and possibly even into next week as well.A block ...

This deluxe set includes 46 Colorful gears (blue, green, orange, red, purple), 26 square pillars, 21 six-way axles, 6 interlocking bases, 1 crank handle. Give the Gift of Learning: Whether you ...