Congratulations to Sig Hecker! If you hadn't been at Los Alamos during the 1990s, you can't quite imagine what a big deal this is. [Full disclosure: Sig is a friend.]
Ehud Barak: Iran is not an "existential issue for Israel."
Hazardous waste dumping in Africa.
Since there's never enough said about the foolishness of missile defense, here's the administration's fact sheet about the decision.
Assessment of yet another threat.