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Sustainability consultant Jane Poynter tells her story of living in a hermetically sealed environment in the Arizona desert for two years and 20 minutes. The experience provoked her to explore how we might sustain life in the harshest of conditions.

Bernie Krause says you can hear how radically environments change through his recordings of nature.

As they resume their investigation into allegations about the use of chemical weapons in Syria, U.N. experts are looking into at least three incidents for which President Bashar Assad's aides have said the rebels were responsible. The inspectors are not expected to assign blame.

By 2015, Facebook and other social networking sites will have to allow California minors to delete embarrassing posts. But the law is riddled with loopholes, and teens won't be protected any more than they already are.

In 1995 and 1996, the federal government was shuttered due to a budget impasse. Sound familiar? We peeked into the past to see what the shutdown looked like back then.

Very few insurers around the country are offering top-of-the-line platinum insurance plans. Policymakers predicted less expensive but more restrictive bronze and silver plans would prove more popular than high-end options, and it looks like insurance companies think so, too.

IceCube, the largest neutrino observatory on earth, covers one cubic kilometer of Antarctic ice. The detector is looking for high-energy neutrinos coming from deep space. Physicist Francis Halzen discusses the decision to build the telescope at the South Pole and how we can construct a map of the cosmos with neutrinos.

We're living in the epoch some scientists call the "Anthropocene"�"an age in which human influence touches nearly everything on the planet. Forty years after the signing of the Endangered Species Act, and nearly 50 years after the Wilderness Act, do we need to rethink how we protect nature? Environmental historian William Cronon and environmental geographer Paul Robbins discuss protecting wild places in the age of climate change.

Joseph Gordon-Levitt also wrote and stars in the film, about a prolific seducer and porn addict who changes his ways when Scarlett Johansson's character enters the picture. Critic David Edelstein says Don Jon is smart, with a subversive touch.

Guitarist Les Paul is best known as the inventor of his namesake solid-body electric guitar, the Gibson Les Paul. But even as a teen, he was a tinkerer. Sue Baker of the Les Paul Foundation talks about some of his early innovations, such as a harmonica holder constructed from a coat hanger, and an electric guitar built with a railroad rail.