The neurobiologist accused of killing three colleagues at the University of Alabama in Huntsville on Friday fatally shot her brother in 1986 in suburban Boston, the authorities in Massachusetts confirmed Saturday. [...]Early Saturday, the police in Huntsville charged the neurobiologist, Amy Bishop, 45, with capital murder in the shootings Friday during a faculty meeting that also left three people wounded. On Saturday afternoon, the police in Braintree, Mass., announced that Ms. Bishop had fatally wounded her brother in their home 24 years ago, which The Boston Globe first reported on its Web site on Saturday. Ms. Bishop was not charged...