Letters to the Editor

Readers discuss swimming sperm, a fishing fox and more

By Science News Staff

- More than 2 years ago

cover of the November 5, 2022 issue

Against the current

In the race to fertilize an egg, bull sperm that swim in groups travel on a more direct path than sperm traveling alone, James R. Riordon reported in “Sperm in groups outswim loners” (SN: 11/5/22, p. 14).

Given that sperm can’t see where they’re going, reader Donald Bruns wondered how the cells know the way to go.