Once dismissed as sticks and forgotten in a museum, the 5,000-year-old tools show prehistoric people hunted whales far from the Arctic. Picture of Krista McGrath analyzing one of the harpoons that ...

Abstract: Design optimization of mechanical system components, such as spiral bevel gears, is important due to their complex geometry and design constraints. However, the complex geometry of these ...

On Nov. 7, 1944, the convergence of both forces in Central Europe led to the only documented direct combat between American and Soviet forces in history. American P-38 Lightning fighters attacked what ...

After five solid years of use, this horn cap has reached the end of its run. A look at wear, durability, and the moment when hand sewing and repair become part of the craft all over again.