Disraeli / Twain: "there are three kinds of lies: lies, damned lies, and statistics."
Table. Chances of dying from selected causes (USA) Cause of death Chances Motor vehicle accident 1 in 100 Homicide 1 in 300 Fire 1 in 800 Firearms accident 1 in 2,500 Electrocution 1 in 5,000 Asteroid/comet impact 1 in 20,000 Passenger aircraft crash 1 in 20,000 Flood 1 in 30,000 Tornado 1 in 60,000 Venomous bite or sting 1 in 100,000 Fireworks accident 1 in 1 million Food poisoning by botulism 1 in 3 million Drinking water with EPA limit of tricholoethylene 1 in 10 million (From C.R. Chapman & D. Morrison, 1994, Nature 367, 33-40.)
According to the NTSB (report here), there were in 2006 (latest figures available) 50 fatalities recorded for US air carriers.
Where does one look for numbers on asteroid / comet impact fatalities?