Introduction
The Multiplicities of Math
by Jesse Emspak

Section 1: Big Questions

1.1.  The Top Unsolved Questions in Mathematics Remain Mostly Mysterious
        by Rachel Crowell

1.2   A Random Walk through the English Language
        by Jordan Ellenberg

1.3   Hilbert Walked so the Clay Mathematics Institute Could Run
        by Evelyn Lamb

1.4   Numbers Game
        by Kelsey Houston-Edwards

1.5   Is Mathematics, like Science, Pluralistic?
        by John Horgan

1.6   New Proof Solves 80-Year-Old Irrational Number Problem
        by Leila Sloman

1.7   The Three-Body Problem
        by Richard Montgomery

1.8   The Un(solv)able Problem
        by Toby S. Cubitt, David Pérez-García & Michael Wolf

Section 2: Measurements and Analysis

2.1   Confronting Unknowns
        by Jessica Hullman

2.2   The Significant Problem of P Values
        by Lydia Denworth

2.3   How Small is Small?
        by Naomi Oreskes

2.4   Computation in Service of Poetry
        by Evelyn Lamb

2.5   Farewell to the Fractional Foot
        by Evelyn Lamb

Section 3: Society, Politics and Economics

3.1   Can an Algorithm Help Solve Political Paralysis?
        by Julia Hotz

3.2   Smartphone Data Show Voters in Black Neighborhoods Wait Longer
        by Daniel Garisto

3.3   Geometry versus Gerrymandering
        by Moon Duchin

3.4   Ask Gini: How to Measure Inequality
        by Evelyn Lamb

3.5   The American Economy Is Rigged
        by Joseph E. Stiglitz

3.6   Is Inequality Inevitable?
        by Bruce Boghosian

Section 4: Your Health by the Numbers

4.1   False Positive Alarm
        by Sarah Lewin Fraser

4.2   The Heisenberg Uncertainty Principle of Social Science Modeling
        by Ben Klemens

4.3   Geometry Points to Coronavirus Drug Target Candidates
        by Michael Dhar

4.4   Few Would Fear COVID Vaccines if Policy Makers Explained Their Risks Better
        by Claudia Wallis

4.5   When Assessing Novel Risks, Facts Are Not Enough
        by Baruch Fischhoff

Section 5: Math Drives Technology

5.1   The Mathematics of (Hacking) Passwords
        by Jean-Paul Delahaye

5.2   Why History Should Matter to Code Breakers
        by Craig P. Bauer

5.3   Color-Changing Fibers Unravel a Knotty Mystery
        by Jeremy Hsu

5.4   Algorithm Aids Search for Those Lost at Sea
        by Scott Hershberger

5.5   Math Can Help Build a Global Digital Community
        by Cindy Lawrence

5.6   The Math of Making Connections
        by Kelsey Houston-Edwards

Section 6: Math 101: Education and Learning

6.1   Why Math Education in the U.S. Doesn't Add Up
        by Jo Baoler & Pablo Zoido

6.2   Teaching the Controversy: Is 5 × 3 Five 3s or Three 5s?
        by Evelyn Lamb

6.3   The Surprising Link between Recreational Math and Undecidability
        by Evelyn Lamb

6.4   The Mathematical Phrase that Melts My Brain
        by Evelyn Lamb

6.5   Learning on the Back of an Envelope
        by Amanda Baker

6.6   Fractions: Where It All Goes Wrong
        by Robert S. Siegler

6.7   The Only Way to Win Is Not to Play the Game
        by Evelyn Lamb

Section 7: Pop Culture Math

7.1   For Math Fans: A Hitchhiker’s Guide to the Number 42
        by Jean-Paul Delahaye

7.2   What Is the Funniest Number?
        by Evelyn Lamb