Ever since cave dwellers figured out that rocks and sticks made it easier to dig holes and gather food, technology has profoundly influenced the way humans live and work. So to catch a glimpse of technologies future, our own Technology Review looked to the people who are creating it. We combed through the rosters of universities, companies, national laboratories, and other R&D outfits around the globe to find 100 of todays most exciting young innovators: the lab dwellers, visionaries, and dealmakers whose work will utterly transform our world in the years to come.

The TR100 all under 35 as of January 1, 2003 are poised at the cutting edge of computing, biotech and medicine, the Internet, and nanotech (and more). In the next 52 pages, you'll not only learn about each innovators unique contributions, you'll also get a view of some of the major trends in each of these four key areas of technology, as seen through the eyes of the TR100. And because many of our honorees efforts are paying off already, we've included for each technology area a table that highlights the new companies and emerging products that are the fruits of their labors.