So says the New York Times:

Some would like to see novel approaches to treating systemic problems that often work against women’s scientific ambitions. Mary Ann Mason and Marc Goulden of the University of California, Berkeley, have gathered extensive data showing stark male-female differences in the family structure and personal lives of academic researchers at the top tiers of the profession.
Surveying outcomes for 160,000 Ph.D. recipients across the United States, the researchers determined that 70 percent of male tenured professors were married with children, compared with only 44 percent of their tenured female colleagues. Twelve years or more after receiving their doctorates, tenured women were more than twice as likely as tenured men to be single and significantly more likely to be divorced. And lest all of this look like “personal choice,” when the researchers asked 8,700 faculty members in the University of California system about family and work issues, nearly 40 percent of the women agreed with the statement, “I had fewer children than I wanted,” compared with less than 20 percent of the men. The take-home message, Dr. Mason said in a telephone interview, is, “Men can have it all, but women can’t.”

Got that? Children hurt a woman’s scientific career more than a man’s, but still, even women who become scientists wish they’d had more kids. Clearly, the government needs to step in to make sure the genders–despite their deep-seated biology- and socialization-based differences–are equal in every way.