Construction

How Jackhammers Work

It's likely that without the invention of the pneumatic jackhammer, the Industrial Revolution wouldn't have hummed along quite so smoothly. Certainly a lot more trains would go around mountains than through them. Learn about this essential tool here.

What's with the Winchester Mystery House?

After her daughter and husband died, heiress Sarah Winchester became obsessed with the idea that spirits haunted her and to appease them she had to have a house continuously built for them. So she did - 24 hours a day for 38 years.