Talk of the Nation on KCCU

As membership in private-sector labor unions has continued to nosedive, traditional labor groups have been forced to reevaluate — just as non-union worker groups have emerged. Guest host Jennifer Ludden talks to writer Josh Eidelson about what he calls 'alt-labor.'

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JENNIFER LUDDEN, HOST:

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.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY, I'm Ira Flatow. This week, scientists at the Oregon Health and Science University, OHSU, announced a breakthrough in cloning of a human embryo. They took adult cells, put the cells into specially prepared human eggs and created genetically identical embryos. It's something lots of stem cell researchers have been trying to do for years without success.

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.