Carbon dioxide readings at the Mauna Loa Observatory in Hawaii have reached what atmospheric scientist Ralph Keeling calls a "psychological threshold" of 400 parts per million. The amount of carbon dioxide in the atmosphere has been steadily increasing since near-constant measurements began at the observatory in 1958.
Credit Jonathan Kingston / National Geographic/Getty Images
Pat Lang, of NOAA in Boulder, Colo., measures the amount of greenhouse gases from an air sample. The Boulder lab is part of a global network of air-sampling laboratories that track carbon dioxide levels in the atmosphere.
Earth's atmosphere is entering a new era. A mountaintop research station that has been tracking carbon dioxide for more than 50 years says the level of that gas in our air has reached a milestone: 400 parts per million.
That number is one of the clearest measures of how human beings are changing the planet. It shows how much carbon we have put into the air from burning fossil fuels — and that carbon dioxide drives global warming.
This measurement comes from Mauna Loa, Hawaii, a remote volcano where the air is largely free of local influences.
Malcolm Shabazz, the grandson of slain civil rights leader Malcolm X, has reportedly died at age 28. A family friend says Shabazz was killed Thursday in Mexico.
The news first appeared in New York's The Amsterdam News, after family friend Terrie Williams tweeted, "I'm confirming, per the U.S. Embassy, on behalf of the family, the tragic death of Malcolm Shabazz, grandson of Malcolm X."
The SETI (Search for Extraterrestrial Intelligence) Institute's Jill Tarter has spent decades searching for the signals that would tell us we aren't alone in the cosmos. Tarter discusses the hunt, and what the presence of intelligent life elsewhere might tell us about our own future on Earth.
While his Office character always took himself seriously, actor Rainn Wilson seems to be all about the laughs. For the entirety of the series, Wilson has played beet-farming, archery-loving middle-management kook Dwight Schrute on the NBC hit television series.
For nearly a decade, Jenna Fischer has played Pam, one of The Office's most recognizably real characters.
If you've ever worked in a clerical position in an alienating office, you'll relate to what Pam goes through. In this interview, Fischer tells Terry Gross about creating all those pained looks and knowing smiles — and about how her five years as an office temp helped to prepare her for the role.
I'm Michel Martin, and this is TELL ME MORE from NPR News. Now it's time for our weekly visit to the Barbershop, where the guys talk about what's in the news and what's on their minds. Sitting in the chairs for a shape-up this week are writer and culture critic Jimi Izrael, with us in Washington, D.C.
This is TELL ME MORE from NPR News. I'm Michel Martin. Coming up, even for devoted Christians reading every word of the bible may be a once in a lifetime challenge. In a minute, we'll hear from a man who decided to copy the entire book by hand. And he tells us he's not even particularly religious. We'll think you'll be intrigued by what he has to say in a few minutes.