In a March 24 "Explainer," Daniel Engber originally stated that the World Security Authority warns that its "world passport" probably won't work in England. The WSA says the world passport won't work in Great Britain.

In a March 25 "Jurisprudence," Dahlia Lithwick mistakenly stated that Lynn Henderson is a professor at the University of Las Vegas. Ms. Henderson is a professor at the William S. Boyd School of Law at the University of Nevada in Las Vegas.

If you believe you have found an inaccuracy in a Slatestory, please send an e-mail to corrections@slate.com, and we will investigate. General comments should be posted in "The Fray," our reader discussion forum.