Mary Lou Jepsen, IEEE Member

AGE: 41

WHAT SHE DOES: Dreams up ways to design a high-quality US $100 laptop for children in emerging countries; acts as “ambassador” to the laptop’s manufacturers in Asia and to the countries that will buy the computers.

FOR WHOM: One Laptop per Child

WHERE SHE DOES IT: Cambridge, Mass., and Taiwan.

FUN FACTORS: Gets to travel the world and meet heads of state.