Studying bee sperm is difficult because of the way it coils, but fluorescent light illuminates the head of the sperm. Sperm quality may indicate stress levels in the bee colony.
Growing applications of nanotechnology include using nanorods for male birth control. The technique has had some success in animals, and offers the potential of human male contraception.
Warnings of an end to human sperm production have been making headlines recently, now with the added threat of shrinking penises. Is this science or sensationalism?
Our new study shows a widely used fertility treatment, known as ICSI, is no better than standard IVF for most people. Yet, it’s being routinely offered around the world.
The guide asks questions about the woman’s age, how long she has been trying for a baby, whether she has been pregnant before, and the percentage of the male partner’s sperm that move normally.