I know that science hasn't always been kind to women in the past but that seems to have changed. So why is it that there are so few women in the scientific community. I know it isn't extremely difficult to find a woman scientist, but compared to men the numbers are rather low (according to Forbes, in the US only 13% of physics PhDs are awarded to women). I am sure that there is still discrimination against women, but it seems to me that this should be significantly lower now as it used to be. What other major factors might there be which result in the fewer women scientists. I remember hearing somewhere that women don't go into science as much because it is harder to start a family due to the lack of stability in a science career and women don't want to wait until their late 30's to start having children. What do you think?