In a short, funny, data-packed talk at TED U, Catherine Mohr walks through all the geeky decisions she made when building a green new house -- looking at real energy numbers, not hype. What choices matter most? Not the ones you think.

Surgeon and inventor Catherine Mohr tours the history of surgery (and its pre-painkiller, pre-antiseptic past), then demos some of the newest tools for surgery through tiny incisions, performed using nimble robot hands. Fascinating -- but not for the squeamish.

As a young scientist, Catherine Mohr was on her dream scuba trip -- when she put her hand right down on a spiny sea urchin. While a school of sharks circled above. What happened next? More than you can possibly imagine. Settle in for this fabulous story with a dash of science.

Mary Katherine Malone’s talk addresses the problems of assigned summer reading and how to fix them.

At the age of 13, Alessandra Maranca, Catharina Morais and Maria Clara Nascentes were faced with an alarming situation of mental health in relation to their environment and started a project that analyzed the current moment, called hypermodernity, the formation of identity and its connection with this lack of well-being of young people. After 7 ...