Science & Technology

You're going to need a bigger fishbowl.

Scientists searching for invasive species in Lake Tahoe scooped up a bright orange goldfish measuring nearly a foot and a half long and weighing more than 4 pounds, according to the website Live Science. (You can see it here.)

Environmental scientist Sudeep Chandra says a survey has uncovered a "nice corner" of the lake where about 15 other giant goldfish were living, apparently after being dumped there by aquarium owners.

Economists at the U.S. Department of Agriculture, gazing into their crystal ball, see American farmers planting and harvesting huge amounts of corn, soybeans, and wheat this year. They're predicting a record harvest of corn: 14 billion bushels, up nearly 40 percent over last year's drought-crippled level.

With supply up, prices will fall. The USDA thinks that the price of the average bushel of corn could fall by a third. And soybean production and price are expected to follow a similar track.

In Fairbanks, Alaska, residents are using wood stoves to heat their homes during the frigid winter months. But, smoke created by these wood burners is contributing to some of the worst air pollution in the country. Cathy Cahill discusses air quality in the Last Frontier.

A week after a meteor exploded over Russia on the same day that an asteroid swung closely past Earth, experts discuss how the potential threats posed by near-Earth objects should be addressed. Astronomers Donald Yeomans and John Tonry weigh in on how to keep the planet safe.

An apple a day keeps the doctor away. And, it turns out, the dentist--because that fibery skin is good for your teeth. Dentists Mark Ryder of the University of California San Francisco and Mark Wolff of New York University answer your toothy questions in this episode of our "Ask an expert" series.

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IRA FLATOW, HOST:

This is SCIENCE FRIDAY, I'm Ira Flatow. The Internet is the new battleground.

PRESIDENT BARACK OBAMA: We know foreign countries and companies swipe our corporate secrets. Now our enemies are also seeking the ability to sabotage our power grid, our financial institutions, our air traffic control systems. We cannot look back years from now and wonder why we did nothing in the face of real threats to our security and our economy.

Transcript

IRA FLATOW, HOST:

Time now for our Video Pick of the Week. Flora Lichtman is here. Welcome to the program. Flora's our correspondent and managing editor for video.

FLORA LICHTMAN, BYLINE: Hi, Ira.

(LAUGHTER)

FLATOW: This one, this week...

LICHTMAN: I don't even know what to say.

(LAUGHTER)

FLATOW: Have you - make sure you've eaten your lunch or your breakfast.

LICHTMAN: It might be - it's going to be grossest video you've probably seen all week. But you should still watch it because it's fascinating.

Transcript

IRA FLATOW, HOST:

Up next - let me get a cup of coffee, put my feet down, get cozy, because it's our monthly meeting of the SCIENCE FRIDAY Book Club. We have the book club regulars here with us. Flora's still with us. And joining us now is Annette Heist, senior producer for SCIENCE FRIDAY. Welcome to the program, Anette?

ANNETTE HEIST, BYLINE: Hi, Ira. Hi, Flora.

FLORA LICHTMAN, BYLINE: Hello.

FLATOW: And we had another classic book this month which is...

HEIST: "Gorillas in the Mist" by Dian Fossey.