US News

May 17 2013 - 1:00pm

Generations of physicists have claimed that time is an illusion. But not all agree. In his book Time Reborn: From the Crisis in Physics to the Future of the Universe, theoretical physicist Lee Smolin argues that time exists--and he says time is key to understanding the evolution of the universe.

May 17 2013 - 1:00pm

Scientists reported this week in the journal Cell that they had used somatic cell nuclear transfer techniques to create a source of embryonic stem cells from the skin cells of a patient. George Daley, director of the stem cell transplantation program at Boston Children's Hospital, and Josephine Johnston of the Hastings Center discuss the research.

May 17 2013 - 1:00pm

A report from the UN Food and Agriculture Organization says insects offer a huge potential for improving the world's food security. Peter Menzel, co-author of Man Eating Bugs, describes some insect-based cuisine and the western aversion to creepy-crawly snacks.

May 17 2013 - 1:00pm

In Brilliant Blunders: From Darwin to Einstein, astrophysicist Mario Livio explores the colossal errors committed by scientific greats, from chemist Linus Pauling's botched model of DNA, to Charles Darwin's failure to understand genetics--the very mechanism of natural selection.

May 17 2013 - 1:00pm

Nobel Prize-winning psychologist Daniel Kahneman is the latest subject in our Desktop Diaries series, although he has no desk. Kahneman, professor emeritus at Princeton University, won the Nobel Prize in economic sciences in 2002 for his research with the late Amos Tversky on our sometimes irrational intuitions and how they affect decision-making.

May 17 2013 - 12:47pm

A study of mine blast victims finds further evidence that there's a resurgence of black lung among coal miners. The relatively young ages of some of the miners and their limited tenure underground suggests significant exposure to coal dust.

May 17 2013 - 12:30pm

When it becomes legal to sell marijuana in the state, packages will have to be labeled. The logo is a marijuana leaf centered over an outline of the state. Will T-shirts and bumper stickers follow?

May 17 2013 - 12:00pm

A new poll finds 42 percent of Americans aren't sure that the Affordable Care Act is actually a law. Guest Host Celeste Headlee discusses this and other health care-related issues with Mary Agnes Carey, senior correspondent at Kaiser Health News, and NPR's Senior Washington Editor, Ron Elving.

May 17 2013 - 12:00pm

From scandals involving the IRS, to spirited Benghazi hearings, it's been a tough week for the Obama administration. But will this bad week really have further political fallout? Guest host Celeste Headlee checks in with the barbershop guys.

May 17 2013 - 12:00pm

African-American entrepreneurs from all over the country have gathered in Ohio this week. Guest host Celeste Headlee speaks with Mike Green of the America21 Project about how to help black youth become more competitive in business. We also hear from teen entrepreneur Amber Liggett who started her own business, 'Amber's Amazing Animal Balloons.'