## Shoelace Study Untangles a Knotty Problem

Researchers have trotted out data that show a combination of whipping and stomping forces is what causes laces to unravel without warning. Karen Hopkin reports.

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Researchers have trotted out data that show a combination of whipping and stomping forces is what causes laces to unravel without warning. Karen Hopkin reports.

April 12, 2017 — Karen Hopkin

How large was the crowd at the recent U.S. presidential inauguration? Or the inauguration eight years ago? Keep on reading to find out how crowd sizes are estimated

April 12, 2017 — Math Dude Jason Marshall

Mathematician Eugenia Cheng will describe how cooking can offer insight into abstract math

April 5, 2017 — Andrea Marks

Immersive experience set to become accessible to all

March 22, 2017 — Davide Castelvecchi and Nature

Yves Meyer wins the Abel Prize for development of a theory with applications ranging from watching movies to detecting gravitational waves

March 21, 2017 — Davide Castelvecchi and Nature

Researchers used ancient climate cycles to confirm the solar system’s chaotic planetary orbits. An Earth–Mars collision is one distant outcome. Julia Rosen reports.

March 20, 2017 — Julia Rosen

A project that measures up

March 16, 2017 — Science Buddies and Sabine de Brabandere

For centuries mathematicians tried to solve problems by adding new values to the usual numbers. Now they’re investigating the unintended consequences of that tinkering

March 15, 2017 — Kevin Hartnett and Quanta Magazine

For thousands of years people have struggled to pin down pi. Watch how mathematicians from Archimedes on have wrapped their heads around the math of circles.

March 14, 2017 — Shelley Sandiford and Lydia Chain

Are we alone in the universe? If so, why? If not, where is everybody? Thankfully, math can help us with these astronomically profound questions

March 11, 2017 — Math Dude Jason Marshall

The simplicity of the stains' repeating patterns is key to why we see so many images in them

February 15, 2017 — Alison Abbott and Nature magazine

A new solution to a decades-old geometry puzzle might unlock the secrets of our planet's inner structure

February 10, 2017 — Davide Castelvecchi and Nature

Great literature is surprisingly arithmetic

February 10, 2017 — Mark Fischetti

Asking people how many others agree with them could yield more accurate estimates

January 25, 2017 — Simon Makin

The long-running effort to ditch the decaying, 19th-century artifact that defines the kilogram nears its conclusion

February 1, 2017 — Tim Folger

Chemists have synthesized the most complex molecular knot ever, using a strand just 192 atoms long. The advance could lead to new tougher materials. Christopher Intagliata reports.

January 18, 2017 — Christopher Intagliata

Feldman creates mathematical models that reveal how cultural traditions can affect the evolution of a species

January 12, 2017 — Elizabeth Svoboda and Quanta Magazine

How to calculate percentages is easier than you think. Quick, what’s 36% of 25? Or how about 250% of 20? Learn a quick and dirty tip to help you calculate all of those pesky percentages in your head.

January 11, 2017 — Math Dude Jason Marshall

Barbara Kiser, books and arts editor at *Nature*, talks about her favorite science books of 2016, especially three works about the little-known history of women mathematicians.

December 31, 2016 — Barbara Kiser and Steve Mirsky

Where does the shortstop play in a paradigm shift?

December 30, 2016 — Steve Mirsky

Mother’s Day is Around the Corner