babies
Sex Ratios at Birth Linked to Pollutants
A large, long-term study across the US and Sweden finds potential correlations between specific pollutants and the proportions of male and female babies born.
ABOVE: © ISTOCK.COM, JFAIRONE
Sex Ratios at Birth Linked to Pollutants
Sex Ratios at Birth Linked to Pollutants

A large, long-term study across the US and Sweden finds potential correlations between specific pollutants and the proportions of male and female babies born.

A large, long-term study across the US and Sweden finds potential correlations between specific pollutants and the proportions of male and female babies born.

ABOVE: © ISTOCK.COM, JFAIRONE

females

snake eating another snake
Male Snakes Cannibalizing Females Present Evolutionary Puzzle
Chloe Tenn | Nov 15, 2021
The Scientist speaks with organismal biologist Xavier Glaudas about possible reasons for his recent finding that male Montpellier snakes cannibalize female conspecifics.
A grayscale electron micrograph shows hundreds of sperm cells stuck together in the foreground
Antibodies Stop Sperm in Their Tracks
Abby Olena | Aug 11, 2021
Engineered antibodies trap and immobilize human sperm in the reproductive tract of female sheep, paving the way for possible use as a nonhormonal contraceptive in people.
Image of the Day: Sperm Donors
Carolyn Wilke | Mar 18, 2019
Asexual female nematodes use their male offsprings’ sperm to fertilize eggs, but cast away their genes.
Human Birth Canal Varies More Widely than Previously Thought
Anna Azvolinsky | Oct 24, 2018
The pelvic bones of women have been shaped more by random evolution than by natural selection, a new study finds.
Women Are Underrepresented at Conferences: Study
Diana Kwon | Apr 25, 2018
An analysis of abstracts from American Geophysical Union meetings reveals that female scientists get fewer speaking opportunities than men.
Menstruation on a Chip
The Scientist Staff | Aug 29, 2017
This device models the female reproductive tract and might lead scientists to a greater understanding of fibroids, cancer, and infertility.
Big Gender Gaps in Salk Institute Faculty: Report
Kerry Grens | Aug 23, 2017
Authored by Salk PIs, the study claims women attract more federal funding, yet have smaller labs and receive less support from the institute.
Sex Differences in Human Gene Expression
Jef Akst | May 4, 2017
Researchers uncover thousands of genes whose activity varies between men and women.
Peer Reviewers Less Likely to Be Women
Kerry Grens | Jan 26, 2017
An analysis of journals from the American Geophysical Union finds women are underrepresented as reviewers, likely because editors recommend them less often.
Sex Differences in the Brain
Margaret M. McCarthy | Oct 1, 2015
How male and female brains diverge is a hotly debated topic, but the study of model organisms points to differences that cannot be ignored.
Cognitive Decline More Swift in Women
Kerry Grens | Jul 22, 2015
Mental agility in women deteriorates at twice the rate of that in men, according to a study of people with mild cognitive impairment.
FDA to Address Female Sexual Dysfunction
Bob Grant | Aug 15, 2014
The federal agency will convene a two-day workshop in October to discuss the development of drugs to treat the issue.