Four engineers who created the Internet are recipients of the National Academy of Engineering's 2001 Charles Stark Draper Prize. Join a live audio Webcast with Vinton Cerf, Robert Kahn, Leonard Kleinrock, and Lawrence Roberts from 2 p.m. to 3 p.m. EST, Tuesday, Feb. 20, and ask questions using an e-mail form, available on the day of the event at http://national-academies.org.

Earl Bakken and Wilson Greatbatch have won the new Fritz J. and Dolores H. Russ Prize for inventing the first human heart pacemaker.

The Draper and Russ Prizes will be presented at ceremonies in Washington, D.C. on February 20. Read more about the recipients and their inventions.