The lunatic fringe is on the march. Read about it in the Irish Times.
[UPDATE: In the comments below, Daniel linked to a follow-up article that indicates the initial story was misreported. The death threats actually occurred at least a year ago. The Australian National University, where the scientists in question work, maintains that the misreporting was the fault of the Canberra Times reporter who wrote the story, but I have to admit it sounds like somebody's political stunt got away from them.]
[UPDATED UPDATE: It looks like the Daily Telegraph piece I linked above might be complete BS. See this thread on Deltoid, with associated comments.]