Yet another swarm of intruders has crashed through America's porous Southwestern border: so-called killer bees. Last week the Department of Agriculture spotted the first incursion on U.S. soil of Africanized bees, originally imported to Brazil from Africa in 1957 for a breeding experiment. All the bees were trapped east of Hidalgo in the Lower Rio Grande Valley and promptly destroyed.
The arrival of the killer bees had been feared ever since hives were discovered in northern Mexico in 1986. The insects' sting is normally no more dangerous than that of their domestic cousins, but, says Terry Lockamy of the Texas Agriculture...
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