A new National September 11 Memorial Museum commemorates both the 2001 attacks and the 1993 World Trade Center bombing. At each turn, exhibits recount chilling and heartbreaking moments from that September day and honors the victims with portraits of each…

“We will not negotiate with terrorists” is one of the golden rules of state policy. But a new study from Michigan University assistant professor Jakana Thomas shows that acts of violence can actually help get terrorist groups to…