Not all lucky accidents have changed the way we live in dramatic ways.
Some fortunate accidents have just made life a little more convenient.
But many of these conveniences have become such a part of our everyday lives that we've come to take them for granted.
The discovery of Velcro is one such fortunate accident.
One summer day in 1948 a Swiss inventor named George de Mestral went for a hike with his dog.
When they returned, they were covered in burrs-seed-sacs that cling to animal fur and clothes