A building called Sustainability Base, at NASA's Ames Research Center in Mountain View, Calif., has an energy-efficient design that allows in sunlight. So for most of the year, the interior is illuminated by natural light.
Kroto displays a model of his discovery in 1996: a soccer ball-shape carbon molecule that spawned a new field of study and could act as a tiny cage to transport other chemicals.
Mike Lester, CEO of Taxi 2000, sits in the SkyWeb Express in the company's warehouse in Fridley, Minn. The company has been working on SkyWeb Express system, a point-to-point personal rapid transit system.
Ackerman + Gruber for NPR