NPR News

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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.
The Justice Department has been scrutinized this week for secretly obtaining phone records of Associated Press reporters and editors while investigating the disclosure of a CIA operation to thwart a terrorist attack. Steve Inskeep talks to Floyd Abrams, a leading First Amendment lawyer, about how the Constitution and the law treat press freedom.
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.
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.
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.
From the Afghan capital Kabul, Morning Edition's Renee Montagne talks to Gen, Joseph Dunford, the commander of all U.S. and international forces there. They discuss the challenges of the current situation on the ground, and look ahead to the withdrawal of NATO combat troops in 2014.