When does a tropical depression become a tropical storm? And when does a tropical storm become a hurricane? What's the difference between a Category 1 and a Category 3 hurricane?

The Saffir-Simpson Hurricane Wind Scale was developed in 1971 and unveiled to the public in 1973. Here’s a look at the system that ranks tropical cyclones by their potential destructive power ...

One was a structural engineer who thought in the ways engineers are trained to — logically and result-oriented.The other, was a meteorologist who, at age 6, had survived one of the deadliest ...