PBS nova science now what's the next big thing? DVD. Host Neil deGrasse Tyson tackles one of science's major challenges in each episode. He will guide us as he explores dramatic discoveries and the frontiers of research that connect each central, provocative mystery. Run Time: 60 minutes. Rating: TV-G. Programs include: social robots - robots already build our cars and vacuum our floors. Engineers are designing robots with the social smarts to understand human feelings, learn from human teachers, carry on conversations, and even make jokes. But is a future full of robotic companions a delightful dream--or a lonely nightmare? Robotic cars - will the car of the future be able to drive itself? At the gm tech center, engineers are testing two-wheeled, battery-powered cars called en-vs. Weighing under 500 kg and measuring about 1.5 meters in length, the tiny cars don't use up much energy or space. And they're smart, too! Using gps, the en-vs can plan a route to their destination, and even talk to each other. Detecting earthquakes - in exclusive coverage, nova sciencenow accompanies a team of U.S. Geologists into Haiti after the tragedy, trying to determine if more quakes are coming; then travels to California, where scientists are uncovering hints of massive destruction yet to come. Smart grid - how does electricity get to from its source to your light switch? Could a new smart grid could do the job better? Smart grids support transient power sources like solar and wind, heading off devastating power outages and letting consumers make greener--and more economical--choices about how and when to power up. Profile: jay keasling - jay keasling grew up isolated on his family's farm in Nebraska.