We all feel the biological master clock, ticking deep within our brains, that tells us when to sleep and when to wake.
Well, it turns out that our skin cells have a circadian rhythm of their own. Researchers have found that depending on the time of day, our skin's stem cells busy themselves with different types of tasks.
I'm Michel Martin and this is TELL ME MORE from NPR News. We've talked before on this program about why Latinos in the U.S. are more likely to tweet and use other social media than other Americans. Today, we're going to hear from a Latino tech leader who wants to boost the Latino presence in the science and business of technology. We'll talk about that in just a few minutes.
The Nobel Prize in Chemistry was awarded jointly to Martin Karplus, Michael Levitt and Arieh Warshel Wednesday. Karplus, Levitt and Warshel won the prize for laying the foundation for computer models that help researchers understand and predict chemical processes like the purification of exhaust fumes or photosynthesis in green leaves.
Originally published on Wed October 9, 2013 4:04 pm
The just-released Riverbelle is one of well over 100 new apple varieties to hit markets around the world in the past six years.
Credit Courtesy of Honeybear Brands
Browsing farmers markets this fall, you may find some new apple varieties mixed in with the Granny Smiths, McIntoshes and Fujis. Susan Brown, head of the apple breeding program at Cornell University, estimates that there have been 130 new apples released around the world in the past six years.
This summer, she contributed two more to that tally: the SnapDragon and the Ruby Frost.
NASA's flight path for its Juno space probe, which is expected to buzz Earth at 3:21 p.m. ET on Wednesday.
After traveling for more than two years and some 1 billion miles, NASA's Juno mission to Jupiter is back where it started. Almost. At 3:21 p.m. ET Wednesday, the Juno space probe will be 347 miles away from Earth, just above the southern tip of Africa.
(As an aside, at around 11:30 a.m. ET, it was more than 90,000 miles away.)
Journalist Ryan Lizza says there's one far-reaching, controversial issue President Obama will soon get to decide all by himself, without having to ask Congress. He alone can approve or reject construction of the Keystone XL pipeline, designed to take heavy crude oil extracted from Alberta, Canada, through America's heartland to refineries on the Gulf Coast.