This Inmate Used Solitary Confinement to Learn Math. Now He's Solving the World's Hardest Equations

In 2010, Christopher Havens was sentenced to 25 years for murder. In 2020, his work in number theory was published in an academic journal.

View in Browser      SHOP EXCLUSIVE SUBSCRIBE         This Inmate Used Solitary Confinement to Learn Math. Now He's Solving the World's Hardest Equations In 2010, Christopher Havens was sentenced to 25 years for murder. In 2020, his work in number theory was published in an academic journal. Read More         The Best Portable Table Saws These compact table saws easily go where the work is: outside, in the garage, or to the job site. Read More     The Best Hydro Flasks for Staying Hydrated These seven bottles and accessories will keep your coffee hot and your water ice cold. Read More             The Air Force Has Begun Sending the B-1 to the Boneyard The bomber is bound for an early retirement in the Arizona desert. Read More     How the Only Successful Alcatraz Prison Break Was Torn From the Pages of Popular Mechanics In 1962, three men broke out of Alcatraz and tried to cross San Francisco Bay using an improvised raft and DIY life vests inspired by projects in Popular Mechanics. Read More         Scientists Just Changed the Rules of What You Can Do While You Sleep A new experiment shows it's possible to talk to dreaming people—and actually hear back. Read More             Here's What to Do in a Boil Water Advisory If your water is potentially contaminated, you must kill the germs before you drink it. Read More     This Ferret Died 33 Years Ago. Scientists Just Brought Her Back to Life. Meet Elizabeth Ann, the very first clone of a U.S. endangered species. Read More     Follow Us Unsubscribe Privacy Notice PopularMechanics.com ©2021 Hearst Communications Inc. All Rights Reserved. Hearst Email Privacy, 300 W 57th St., Fl. 19 (sta 1-1), New York, NY 10019