Science Night 4/11

Nature “Ocean Giants: Voices of the Sea” at 7 pm
Humpback whales’ songs carry thousands of miles, while a sperm whale scans the ocean depths with a sonar laser beam louder than a thunderclap. “Voices of the Sea” reveals a surprising underwater world where sound takes the place of sight.

Nova “Deadliest Tornadoes” at 8 pm
In April 2011, the worst tornado outbreak in decades left a trail of destruction across the U.S., killing more than 340 people. Why was there such an extreme outbreak? How do such outbreaks form? With modern warning systems why did so many die? Is our weather getting more extreme — and if so how bad will it get? This episode of NOVA looks at the science behind the April outbreak, meeting those affected and the scientists trying to predict tornadoes and understand whether this outbreak relates to global climate change.

America Revealed “Food Machine” at 9 pm
Meet America Revealed host Yul Kwon at a KLRU event on 4/23. Details and RSVP

Over the past century, an American industrial revolution has given rise to the biggest, most productive food machine the world has ever known. Join host Yul Kwon to learn how this machine feeds nearly 300 million Americans every day. Discover engineering marvels created by putting nature to work, and consider the toll our insatiable appetites take on our health and environment. Embark with Kwon on a trip that begins with a pizza delivery route in New York City, then goes across the country to California’s Central Valley, where nearly 50 percent of America’s fruits, nuts and vegetables are grown, and into the heartland for an aerial look at our farmlands. Meet the men and women who keep us fed – everyone from industrial to urban farmers, crop-dusting pilots to long-distance bee truckers, modern-day cowboys to the pizza deliveryman.