## 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?

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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?

2 hours ago — Math Dude Jason Marshall

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

New NIMH chief Joshua Gordon says he will focus on quick wins, brain circuits and mathematical rigor

October 28, 2016 — Alison Abbott and Nature magazine

Fourth- and eighth-graders score better than before, but weak gains and overall poor marks hint at long way to go

October 27, 2016 — Tanya Lewis

For this puzzle with over 43 quintillion permutations, author Ian Scheffler explains how players have found the most efficient route to resolving a Rubik’s cube.

October 26, 2016 — Lydia Chain

Learn how to use statistics to understand the significance of the latest political polling results and to keep yourself from being duped by misleading information

October 26, 2016 — Math Dude Jason Marshall

Author and “Speedcuber” Ian Scheffler reveals some of the math behind how you could solve the Rubik’s cube puzzle.

October 24, 2016 — Lydia Chain

Research shows that an emphasis on memorization, rote procedures and speed impairs learning and achievement

November 1, 2016 — Jo Boaler and Pablo Zoido

Computer scientists have come up with an algorithm that can fairly divide a cake among any number of people

October 13, 2016 — Erica Klarreich and Quanta Magazine

A top secret science project

October 6, 2016 — Science Buddies and Ben Finio

David J. Thouless, F. Duncan Haldane and J. Michael Kosterlitz split the 2016 Nobel Prize in Physics for theoretical discoveries of topological phase transitions and topological phases of matter.

October 4, 2016 — Steve Mirsky

The modified version of the sieve of Eratosthenes could accelerate computer calculations

September 24, 2016 — Matías Loewy

It’s the last standard of measurement that is still based on a physical object—but it will soon be derived from a mathematical constant

September 4, 2016 — Knvul Sheikh

What are half-lives? And what do they have to do with measuring the age of the solar system and predicting the effects of a morning cup of coffee? Keep on reading to find out!

August 17, 2016 — Math Dude Jason Marshall

A centering science activity

August 11, 2016 — Ben Finio and Science Buddies

A rare appearance by enigmatic Shinichi Mochizuki brings faint optimism about his famously impenetrable work

July 29, 2016 — Davide Castelvecchi and Nature magazine

Jim Papadopoulos has spent a lifetime pondering the maths of bikes in motion. Now his work has found fresh momentum

July 20, 2016 — Brendan Borrell and Nature magazine

Creators factor in “origin-of-life” events and available building blocks

July 11, 2016 — Sarah Lewin and SPACE.com

Ukrainian mathematician Maryna Viazovska recently figured out how spheres could be efficiently arranged in eight and 24 dimensions

June 30, 2016 — Evelyn Lamb

The mathematician Ken Ono believes that the story of Srinivasa Ramanujan—mathematical savant and two-time college dropout—holds valuable lessons for how we find and reward hidden genius

June 4, 2016 — John Pavlus and Quanta Magazine

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