How? That's going to be your first question after reading the headline of this article. How can a bike helmet be invisible and still protect our skulls?
Two women in Sweden -- Anna Haupt and Terese Alstin -- have invented the answer. Last year they debuted the Hövding, a bicycle helmet that remains invisible unless you need it, to solve the issues we all have with helmets. It is designed to inflate in a fraction of a second if you have an accident.
"It became mandatory for children to wear a...Full Story