Science Friday® is produced by the Science Friday Initiative, a 501(c)(3) nonprofit organization.

Science Friday® and SciFri® are registered service marks of Science Friday, Inc. Site design by Pentagram; engineering by Mediapolis.

Steven Strogatz

Researchers found that potentially 95 percent of cab rides in New York City could have been shared.

cab sharing, steven strogatz

As we celebrate Pi Day, mathematician Steven Strogatz talks about how the ancients calculated pi—and how you can do it at home.

mathematician, Steven Strogatz, pi, pi day, irrational number, greek number

Did you know some infinities are bigger than others? Or that one is equal to .99999999999 repeating? Just a few of the math mysteries in *The Joy of X*, a new book by Steven Strogatz.

math, algebra, steven strogatz, stephen strogatz, counting, numbers, infinity

Did you know some infinities are bigger than others? Or that one is equal to .99999999999 repeating? Just a few of the math mysteries in *The Joy of X*, a new book by Steven Strogatz.

mathematics, math, numbers, steven strogatz, the joy of x

What are the odds? How are we connected? And does it all add up? Steven Strogatz, professor of applied mathematics, joins us to run the numbers.

math

Chances are you've heard of the 'small world' idea of six degrees of separation. But is it correct?

small worlds, six degrees, kevin bacon

Baby, It's Cold Outside

- Winter Weather Predictions -- Science or Folklore?
The Old Farmer's Almanac predicts winter weather months in advance. But how scie...

- Winter Wonderland? Wonder No Longer
A panel of experts discusses the different scientific phenomena that combine to ...

- Cure Winter Blues With Light Therapy--Or The Beach
Psychiatrist Richard A. Friedman discusses several effective treatments for the ...

- Cracking the Cool Science of Ice
Sure, it's just frozen water, but what IS ice really?

- Cold-Water Fish Break the Ice with Antifreeze
Cold-water fish and snow-dwelling insects have evolved antifreeze proteins to av...