] The dreaded Africanized honey bee -- better known as
] the "killer bee" -- may be buzzing slightly northward.
] Entomologists believe that an Africanized swarm was
] responsible for an attack in Tipton, Okla., earlier this
] month. Africanized bees were first discovered in Texas in
] 1990, setting off panicked reports that they'd be
] ubiquitous throughout much of the United States in a
] matter of years. But they've only made it to six
] Southwestern states so far. Why are the killer bees
] moving so slowly?

Why Are Killer Bees So Slow? - Aren't they supposed to be here already? By Brendan I. Koerner