Charley Kline (left), working at UCLA, sent the first transmission over ARPANET to Bill Duvall at the Stanford Research Institute. Guy Raz/NPR hide caption

itoggle caption Guy Raz/NPR

Peppers for sale at what locals are calling the White House Farmers Market, in Washington, D.C. Matt Sennewald/NPR hide caption

itoggle caption Matt Sennewald/NPR