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<p>Brain researchers say the big fluctuations in IQ performance they found in teens were not random — or a fluke. </p>

IQ Isn't Set In Stone, Suggests Study That Finds Big Jumps, Dips In Teens

A new study documents significant fluctuations in the IQs of a group of British teenagers. The findings bolster the theory that the IQ test isn't a measure of a person's "fixed" intellectual capacity but rather, a gauge of acquired knowledge that progresses in fits and starts.

<p>Casey Gittelman present her study findings at a medical meeting in Boston.</p>

Pill Or Candy? Can You Guess Which Of These Is Medicine?

If you didn't get the right answer, don't feel bad. A precocious Ohio girl who asked teachers and kindergartners to look at 20 matched pairs of medicines and candies found they were wrong around 30 percent of the time.

<p>Lena Blackburne Baseball is the only baseball rubbing mud company that serves the pro leagues. Where does the mud come from? That's a secret.</p>

Pro Pitchers' Dirty Secret Rubbed On Every Ball

Without a little mud, pitchers in the pro leagues wouldn't be able to put enough topspin on their pitches. It can't be just any mud, either. Since the 1950s, all the mud in every major league clubhouse has come from the same secret spot.

<p>Texas Rangers pitcher Derek Holland and catcher Mike Napoli celebrate after defeating the St. Louis Cardinals 4-0 in game four of the MLB World Series.</p>

Napoli, Holland Are Names To Remember As Rangers Even Series At 2-2

Pitcher Derek Holland gave up just two hits over 8 1/3 innings and catcher Mike Napoli hit a three-run home run as the Texas Rangers beat the St. Louis Cardinals 4-0. Game five of the World Series is tonight.

A worker monitors the loading of containers on to a ship at a harbor in China's Shandong province. Under a new U.S. law, Chinese food exporters will now have to share more food safety information with American food importers.

FDA Officials In China To Plug New Food Safety Law

The new U.S. food safety law will require foreign growers and manufacturers to prove their products are safe before they're shipped to the United States. Food and Drug Administration officials went to China to explain what that country's problem-plagued food system will have to do to measure up.

<p>Derrin Yellow Robe, 3, stands in his great-grandparents' backyard on the Crow Creek Reservation in South Dakota. Along with his twin sister and two older sisters, he was taken off the reservation by South Dakota's Department of Social Services in July 2009 and spent a year and a half in foster care before being returned to his family.</p>

Native Foster Care: Lost Children, Shattered Families

Nearly 700 Native American children in South Dakota are being removed from their homes every year, sometimes in questionable circumstances.

<p>Education Secretary Arne Duncan visited Oregon earlier this month, and he heard from an Oregon City teacher who complained about the rules of a performance-based pay bonus grant.</p>

School District Says No To Teacher Bonus Grant

Oregon City, just south of Portland, Ore., has rejected more than $2.5 million in federal funds. The school district turned down money that would have given performance-based pay bonuses to teachers, a controversial part of the Obama administration's education policy.

Occupy Violence Reignites Criticism Of Oakland Police

Clashes between police and Occupy Wall Street protesters in Oakland, Calif., made news this week. But the violence has less to do with the Occupy movement than with the long history of law enforcement troubles in that city.

Gourmet and organic, yes. But also a source of deadly botulism.

Organic Isn't Always Safer When It Comes To Botulism

An outbreak of botulism linked to organic Italian olives makes it clear that even food that sounds pristine can harbor deadly pathogens. Organic foods may be more vulnerable to some pathogens because of the way they are grown. Food processors fight botulism with heat, salt, and acid.

<p>The upper row of images shows blood samples through a traditional microscope. The bottom row shows the same samples imaged on a smartphone.</p>

My Smartphone Is A Microscope. What Can Yours Do?

Physicists have found a way to turn a smartphone camera lens into a microscope and a spectrometer. They say both could be handy for doctors in remote areas with few laboratories who need to look at blood samples.

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