Knowledge sharers: Guatemalan farms, tech firms mapping illegal fishing
1. United States
The United States finished destroying its chemical arsenal July 7, marking the first time declared weapons of mass destruction have been eliminated globally.
Modern chemical weapons were first used during World War I, after which they were widely condemned as inhumane. In 1925, the Geneva Protocol prohibited the use of chemical weapons, and in 1997, a United Nations convention required their eradication. Chemical weapons remain in use by some terrorist groups, and some nations have been accused of retaining them illegally.
The U.S. amassed
