Some 25 underwater mines mysteriously exploded in the summer of 1972. A newly declassified report points its finger at a surprising culprit: the sun.

In the early 20th century, monowheels and spheres were all the rage. So, of course, someone tried to turn them into weapons of war...

Unfortunately, some of the most popular sci-fi weapons are only impressive because they sound cool...

Despite what the movie told you, we wouldn't be all that defenseless from an alien invasion.