Engineers have long been involved in helping the nation rise to challenges and to recover from disaster, including the Sept. 11 attack.
How engineering is helping to rebuild Ground Zero.
A new prime number, thought to be the largest ever identified, has been discovered by a professor at the university of Central Missouri. Curtis Cooper used a giant computer network to do the work to find the 17-million digit number - which is a number divisible only by itself and by one.
