Please take a moment to read this essay, posted on CNN.com, by Meg Urry, the director of the Yale Center for Astronomy and Astrophysics.
"But as the new study tells us, despite our best hopes, we scientists, like everyone else, expect men to be better scientists than women, and we project those expectations on the real people we encounter, not consciously and not meaning to discriminate yet evaluating women below their demonstrated potential."
The news that there is a definitive bias against women in certain fields is, yes, slightly depressing, but, as Urry points out, we must first acknowledge our biases before we can act on them.