And we're joined now by our Friday political observers, columnist E.J. Dionne of The Washington Post. Hey there, E.J.
E.J. DIONNE: Good to see you.
CORNISH: And David Brooks of the New York Times, good to see you.
DAVID BROOKS: Good to see you.
CORNISH: So we're going to go back to the news we heard at the top of the hour about Syria. We heard Tom Bowman talk about three U.S. options all having downsides. Here's President Obama on this topic today.
The U.S. Navy is planning to ramp up training activities off California and Hawaii. But that has rekindled a battle over Navy sonar, which is known to harm marine mammals. From member station KQED, Lauren Sommer reports.
LAUREN SOMMER, BYLINE: We humans are visual creatures and for good reason. If someone is far away, you can usually see them before you hear them. Underwater, it's the opposite.
BRANDON SOUTHALL: The physical environment of the ocean really favors the use of sound, and the animals have evolved accordingly.
From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.
ROBERT SIEGEL, HOST:
And I'm Robert Siegel.
The surviving suspect in the Boston Marathon bombing was moved today to a prison hospital outside Boston. Officials say Dzhokhar Tsarnaev is no longer cooperating with investigators. Some members of Congress, meanwhile, say the FBI should have heeded Russian warnings that Dzhokhar's elder brother had become a follower of radical Islam.
Originally published on Tue April 30, 2013 9:54 am
When we first heard about researchers using tiny freely floating tools to grab tissue samples deep inside the body, we were scared.
But our fears quickly turned to fascination.
Johns Hopkins engineers are testing out what they call "untethered microgrippers" as a better way to investigate hard-to-reach places. They have launched hundreds of these things, which look like miniature ninja throwing stars, inside the body of animal to retrieve tiny pieces of tissue for biopsies.