Biochemist Kary Mullis talks about the basis of modern science: the experiment. Sharing tales from the 17th century and from his own backyard-rocketry days, Mullis celebrates the curiosity, inspiration and rigor of good science in all its forms.

(NOTE: This talk was given in 2009, and this field of science has developed quickly since then. Read "Corrections & Updates" below for more details.) Drug-resistant bacteria kills, even in top hospitals. But now tough infections like staph and anthrax may be in for a surprise. Nobel-winning chemist Kary Mullis, who watched a friend die when ...

Melissa Guerra is an 8th generation Texan, born and raised on a working cattle ranch in South Texas. She is a self taught culinary expert and food historian, specializing in the food ways of the American continent, especially Texas regional, Mexican, and Latin American cuisine. Melissa Guerra is a member of Les Dames d Escoffier, a founding boa...

In three years, the Donas da P* Toda podcast listened to more than 320 women. From these conversations and exchanges with listeners, journalists Larissa Guerra and Marina Melz identified three important reflections that women should make about their self-esteem. In this talk, they talk about the context in which they are inserted, the expectatio...