A global scientific team said that there is only one plausible explanation for dinosaur extinction: asteroids.
The publisher of "The Last Train from Hiroshima" by Charles Pellegrino is halting publication – and that's been very good for sales.
In Potsdam, Germany, debate rises over a memorial that marks President Harry Truman's 1945 decision to drop an atomic bomb on Hiroshima, Japan.
Mohamed ElBaradei stepped down from his post at the UN nuclear watchdog IAEA at the end of November. He's been seen both as an honest broker and as being too soft on Iran.
Obama, in first stop of his Asia trip, addressed the thorny issue of a US military base in Okinawa. Despite recent tensions, Obamamania is still strong in Japan.
Bill Clinton spoke to Kim Jong-il about detained South Koreans and missing Japanese citizens. But N. Korea's neighbors are skeptical of any move away from six-party framework for dialogue.
Q&A: Kim Jong Il's drive to make his nation a nuclear power and how that threatens Asian neighbors.
Monday's explosion dashed hopes that the secretive nation is simply building its weapons program as a bargaining chip.
Experts see the Islamic fighters as less of a risk than radical insiders gaining access to nuclear materials.