Author Michael Pollan says the current aversion to carbohydrates is just the most recent manifestation of America's long-standing love affair with fad diets. He speaks with NPR's Linda Wertheimer.
As NPR's senior national correspondent, Linda Wertheimer travels the country and the globe for NPR News, bringing her unique insights and wealth of experience to bear on the day's top news stories.
The National Weather Service declares different levels of concern about potentially dangerous weather conditions, depending on rainfall and wind speed. But if you're not sure what to glean from those different levels, here's some guidance.