Science Night – 7/18

Watch Brian Greene Previews NOVA’s “The Fabric of the Cosmos” on PBS. See more from NOVA.

Nature: Bears of the Last Frontier, 7pm
Chris Morgan explores the world of black bears caught in the crossroads of urban development in Anchorage and the wilderness. This is a new normal for bears and for their human neighbors. Some bears are so comfortable living in urban surroundings that their primary habitat is a golf course. In residential areas, bears frequently raid garbage bins and birdfeeders for easy snacks. But these behaviors are less than ideal for bears and residents alike. Morgan heads north out of Anchorage to Denali National Park, where the mountains loom over treeless plains and bears get by on a diet of thousands of berries a day.

Nova: The Fabric of the Cosmos “What is Space?”, 8pm
Space. It separates you from me, one galaxy from the next and atoms from each other. It is everywhere in the universe. But to most of us, space is nothing, an empty void. Well, it turns out space is not what it seems. From the passenger seat of a New York cab driving near the speed of light to a pool hall where billiard tables do fantastical things, Brain Greene reveals space as a dynamic fabric that can stretch, twist, warp and ripple under the influence of gravity.

Nova: The Fabric of the Cosmos “The Illusion of Time”, 9pm
Time. We waste it, save it, kill it, make it. The world runs on it. Yet, ask physicists what time actually is, and the answer might shock you: They have no idea. Even more surprising, the deep sense we have of time passing from present to past may be nothing more than an illusion. How can our understanding of something so familiar be so wrong? In search of answers, Brian Greene takes us on the ultimate time traveling adventure, hurtling 50 years into the future before stepping into a wormhole to travel back to the past.