A poll from the journal Nature earlier this year found that 75% of researchers in the U.S. are considering leaving the country.

That includes a man who's been dubbed the Mozart of Math.

Stephanie's eye examines what's behind a potential scientific brain drain.

And you only allow to use it three times.

UCLA professor Terence Tao has spent his entire life solving problems, not just theoretical

ones.

And every scan is like taking one measurement.

Tao is explaining how his research led to an algorithm which dramatically cut the time

of MRI scans.

MRI scans that used to take, say, three minutes.

They cannot take 30 or 40 seconds.

Math research has led to countless technological breakthroughs.

These are things that mathematicians played with in like the early 20th century.

Haled as the Mozart of math.

Tao enrolled in college by the time he was nine. As a teenager, he

immigrated from Australia to the U.S. and began a Ph.D. program at Princeton. In 2006,

he won Math's highest honor, the Fields Medal. And today, he's widely considered to be the

finest mathematician of his generation.

What was appealing about being a researcher and a PhD student here in the U.S.

Because there's just this long tradition of excellence,

and people know that they can come here, they can be welcomed.

You know, I was very influenced by American science shows. Cosmos

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