roundup
By Chris Coke
By Brandon Russell
By Harry Rabinowitz
By Carsen Joenk
By John Alexander, Brandt Ranj
By Rebecca Sohn
By Ingrid Alt
By John Alexander, Gabriel Morgan
By Stacey L. Nash
By John Alexander
By Carol Benton
By Adam Douglas
By Gabriel Morgan
By Fiona Tapp
By Eric Frederiksen
By Brandon Russell, Stan Horaczek
By Kalli Hawkins
By Terri Williams
By Hannah Singleton
By Stan Horaczek
By Chelsea Frank, Abby Ferguson
By James Lynch
By William Goodman
By Curtis Silver
By Kevin Cortez
By Will Fulton
By Chelsea Frank
By Julian Vittorio
By Brian S. Hawkins, Brandt Ranj
By Markkus Rovito
By Terri Williams, Brandt Ranj
By Nicholas Ware
By Brian S. Hawkins, Abby Ferguson
By Don Melanson
By Brendan Hesse
By Brian S. Hawkins
By Nick Hilden
Get Popular Science’s biggest stories delivered to your inbox.