Cities like Houston are dotted with air-sniffing monitors that measure levels of benzene and other potentially unhealthy air pollutants. But those monitors can't answer the question we care about most: Is the air safe?
That's because there's no simple relationship between toxic air pollutants and health risks. Researchers at the University of North Carolina in Chapel Hill are trying to get a leg up on that problem. They are building an instrument that uses human lung cells to measure health hazards in the air more directly.
Americans do love their bacon, but is that romance a national security issue?
This week, China's biggest pork producer announced plans to buy Virginia-based Smithfield Foods Inc. Republican Sen. Charles Grassley of Iowa wants a national security review by an interagency panel known as the Committee on Foreign Investment in the U.S., or CFIUS.
This is TELL ME MORE from NPR News. I'm Michel Martin. Coming up, we'll head into the Barber Shop to get the buzz on some hot topics in the news. But first we want to hear about another place to hang out to find out about what's going on in the world. That would be the Internet. And while a lot of people might think that that's the domain of the younger set, it turns out that there is a thriving online world catering to 40 and 50-somethings.
I'm Michel Martin, and this is TELL ME MORE, from NPR News. Later in the program, we will meet with actress and producer Rita Wilson. She says passing the big 5-0 has liberated her from her creative rut and is editor-at-large of the Huff/Post50 website. She's now launching a new literary section and inviting other 50-somethings to get those creative juices flowing. She'll tell you more about that in just a few minutes.