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Math913 articles archived since 1845

Human Body Ratios

A project that measures up

March 16, 2017 — Science Buddies and Sabine de Brabandere

New Number Systems Seek Their Lost Primes

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

How to Calculate a Bigger Slice of Pi

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

The Race to Replace the Kilogram

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

February 1, 2017 — Tim Folger

Knot Not Easy to Knot

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

How to Quickly Calculate Percentages

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

Best Science Books of 2016

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

Mesmerizing Fractals

An artistic science project from Science Buddies

December 22, 2016 — Science Buddies and Sabine de Brabandere

What Is a Light-Year?

Do you know what it is that a light-year actually measures? Do you know why so many people find it confusing? And why they really shouldn’t?

December 3, 2016 — Math Dude Jason Marshall

The Math behind the Polls

When polls try to tease out what a group of people is thinking, what are they measuring and how can they go wrong?

November 29, 2016 — Lydia Chain
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