http://www.ted.com Human beatbox James “AudioPoet” Burchfield performs an intricate three-minute breakdown — sexy, propulsive hip-hop rhythms and turntable textures — all using only his voice.

http://www.xdrtb.org Photojournalist James Nachtwey sees his TED Prize wish come true, as we share his powerful photographs of XDR-TB, a drug-resistant strain of tuberculosis that’s touching off a global medical crisis. Learn how to help at http://www.xdrtb.org

http://www.ted.com Historian Doris Kearns Goodwin talks about what we can learn from American presidents, including Abraham Lincoln and Lyndon Johnson. Then she shares a moving memory of her own father, and of their shared love of baseball.

http://www.ted.com Noah Feldman makes a searing case that both politics and religion — whatever their differences — are similar technologies, designed to efficiently connect and manage any group of people.