Science

Transcript

IRA FLATOW, HOST:

Flora Lichtman is here with our Video Pick of the Week. Hi, Flora. What have you got for us today?

FLORA LICHTMAN, BYLINE: Ira, today we have the story of a comet that has a tale to tell.

FLATOW: Comets...

(LAUGHTER)

LICHTMAN: Get it?

FLATOW: I get it. Straight pun.

LICHTMAN: It's even better, Ira, because actually the part of - what the comet is telling us comes from its tail. OK, so let me...

FLATOW: Go for it.

(LAUGHTER)

California's San Onofre nuclear power plant will be shut down for good amid concerns as to whether it could be safely restarted after being offline since early last year because of a radiation leak.

The plant's operator, Southern California Edison, said in a statement Friday that San Onofre's twin reactors "had served the region for over 40 years" but that the 16 months of uncertainty about whether they would or wouldn't go back online "was not good for our customers, our investors or the need to plan for our region's long-term electricity needs."

When doctors run out of clues on how to treat a cancer patient, they sometimes order a scan of all the patient's genes. But such a test can turn up unexpected results, such as greater risk of another disease. When are doctors obligated to tell the patient what they know? And do patients have the right not to know?

Transcript

IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. Up next, surviving the big one, and I mean a really big one. As any fan of dinosaurs knows, extinction happens. The Earth isn't immune to assaults. You've got your asteroids, your volcanic eruptions, events that cause so much disruption to the environment that eventually life or most of life is wiped out.

Many people associate France today with the production of great wines. But winemaking isn't native to the French. Patrick McGovern, an archaeologist of fermented beverages, has dated the beginning of viniculture in France to around 500 B.C. and contact with the Etruscans.

Scenes of destroyed homes and businesses were common following the recent Oklahoma tornadoes. David Prevatt, a structural engineer at the University of Florida, says that improving resistance to tornadoes will require better building materials and techniques, plus a strong dose of political will.

Singer Justin Bieber is the latest celebrity to score a booking on Virgin Galactic's SpaceShipTwo, destined for its first suborbital test flight sometime this year.

The Bieb and manager Scooter Braun join the likes of Ashton Kutcher, Leonardo DiCaprio and Angelina Jolie on the elite passenger list of those willing and able to pay $250,000 for a seat on Richard Branson's commercial space-flight venture.

Sir Richard tweeted the news Thursday:

Tossing out food is clearly a waste of money — and maybe even immoral, according to Pope Francis, who on Wednesday likened food waste to "stealing from the table of those who are poor and hungry." And as we've reported, you also may be creating extra greenhouse gas emissions by sending food to