Bernie Krause has been recording wild soundscapes -- the wind in the trees, the chirping of birds, the subtle sounds of insect larvae -- for 45 years. In that time, he has seen many environments radically altered by humans, sometimes even by practices thought to be environmentally safe. A surprising look at what we can learn through nature's sym...

Using examples from birdsong, the natural lilt of emphatic language and even a cooking pan lid, singer-songwriter and TED Fellow Meklit Hadero shows how the everyday soundscape, even silence, makes music. "The world is alive with musical expression," she says. "We are already immersed."

What do dinosaurs, hens, and robots have in common? Bruno Grossi is a biologist and he tells us through his ingenious experiments how he's contributing to biology while developing innovative technologies based on nature. Bruno is a biomechanist: he's interested in know how things move -- current animals, dinosaurs, robots. Movement is a serious ...

Brian Cross, director of professional services at ESRI, talks about passion and purpose.