Paul Allen grants go where few have gone before

When Microsoft co-founder Paul Allen pledged this summer to give away most of his fortune, he singled out brain science and biology as among the likely beneficiaries.

Now, the Mercer Island billionaire is following up with $9.4 million in grants to seven research teams, including two at the University of Washington.

The projects include efforts to build tiny microscopes that can peer into the living brain and to identify the neurons that control anxiety and aggression.