Nova scienceNow (Episode 10)


Episode Info

An episode of "Nova scienceNow" looks at the "space elevator" concept: dropping a 22,000-mile cable from a satellite to Earth. Also: extending human life span; NASA satellite-imaging technology that's used to locate and map Maya ruins; Princeton molecular-biology professor Bonnie Bassler, who has discovered how bacteria communicate. Neil deGrasse Tyson hosts.