Astronomers measure the mass of the Milky Way by calculating how hard it is to escape The Manta Ray: How America's Futuristic Underwater Drone will Change Warfare.

When Bryan sees his daughter Alice practicing Japanese calligraphy with a brush and ink, he is struck by how outdated it all seems... When do you need to use a pen nowadays, let alone a brush?!

An curved arrow pointing right. A handmade calligraphy brush, custom made for a master calligrapher, can cost over $1,000. At Hata Bunshindou each brush tip is made by a single artisan.