Science & Health

Transcript

AUDIE CORNISH, HOST:

From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.

MELISSA BLOCK, HOST:

And I'm Melissa Block. Yesterday, President Obama sent out a tweet drawing attention to a study about climate change. The study found that scientists who say climate change is largely caused by human activities vastly outnumber the skeptics. NPR's Richard Harris has more on the study that caught the White House's attention.

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.

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.

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.

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.

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.

"It feels good to be able to change something. It feels good to give." -- Ron Finley

You can give away almost anything — your time, money, food, your ideas. Giving helps define who we are and helps us connect with others. And thanks to the Internet and a rise in social consciousness, there's been a seismic shift not only in what we're giving, but how. In this hour, stories from TED speakers who are "giving it away" in new and surprising ways, and the things that happen in return.

Part 2 of the TED Radio Hour episode Giving It Away.

About Ron Finley's TEDTalk

Ron Finley plants vegetable gardens in South Central LA — in abandoned lots, traffic medians, along the curbs. Why? For fun, for defiance, for beauty and to offer some alternative to fast food in a community where "the drive-thrus are killing more people than the drive-bys."

About Ron Finley

Part 1 of the TED Radio Hour episode Giving It Away.

About Mark Bezos' TEDTalk

Volunteer firefighter Mark Bezos tells a story of an act of heroism that didn't go quite as expected — but that taught him a big lesson: Don't wait to be a hero. Give now.

About Mark Bezos

Part 3 of the TED Radio Hour episode Giving It Away.

About Dan Pallotta's TEDTalk

Stimulating the brain with a very small electrical current through the forehead could boost a student's ability to learn and remember basic mathematics, a provocative experiment suggests.

The work, published online Thursday by the journal Current Biology, could help those who struggle with mental arithmetic. But the study was small and the long-term effect wasn't profound.

In the latest installment of our "Looking Ahead" series, NPR science correspondent and Radiolab co-host Robert Krulwich talks about reporting on big ideas in imaginative ways, the old days at NPR and what he's wondering about today.