In 1856, tall top hats were the height of fashion for men. Two English gentlemen in the hatter trade, Edward G. Healy and Edward E. Allen, resolved to find a material that would maintain the tall ...

When the first laser and inkjet printers for PCs arrived in the mid-1980s, they could only print in monochrome, and their respective advantages were obvious. Today, the differences between laser and ...

When the first laser and inkjet printers for PCs arrived in the mid-1980s, they could only print in monochrome, and their respective advantages were obvious. Today, the differences between laser and ...