There is some evidence to suggest that citizens monitoring their communities can reduce crime. But the Trayvon Martin shooting focused new attention on neighborhood watch programs. Many neighborhoods have them, but the Martin case has brought questions about what they can and can't do to the fore.
New York City has been referred to as a concrete jungle. But researchers say it is more 'jungle' than you might think. A panel of experts discuss the plant and animal life found in city waters and green spaces. They also discuss the impact of urbanization and climate change on a city's biodiversity.
Did you know Mayor Michael Bloomberg has an engineering degree and built a ham radio as a child? The mayor talks about his passion for science and how it shapes the way he thinks. He also discusses plans for an applied sciences campus in New York and potential spin-offs from the project.
The first Homo sapiens appeared on the planet some 200,000 years ago. But even though they looked fully human, they didn't act fully human until they began creating symbolic art, some 100,000 years later. Paleoanthropologist Ian Tattersall discusses those human origins in his book Masters of the Planet.
Coyotes were first spotted in New York City in the 1990s. Now they are thought to be permanent residents of the Bronx, and have been seen in Queens and Manhattan. Wildlife biologist Mark Weckel, of the Mianus River Gorge Preserve, is documenting their immigration through camera traps in New York City parks.