Tag: sperm
Is It a Boy or a Girl?
Parents with a new baby are almost always asked, “Is it a boy or a girl?” And the answer is almost always one or the other.
Doctor’s Diary: The Wonder of Your Body’s Genetic Instructions
Imagine the New York Public Library cutting every manual in half daily, or more often, and sending every month entire halves to a library in London.
Doctor’s Diary: Evolution’s Countless Chicken-and-Egg Conundrums
It turned out last week that scientists have been wrong for 350 years about how sperm swim.
Just-in-Time Delivery in Living Cells
Our modern world relies on shipping and receiving, but many cargoes have to arrive at the right time to be useful.
The Human Difference and the Design of Sex
It’s safe to say that human intimacy, at its best, surpasses that of any animal, even the most intelligent.