Scientists at Cornell University may be closing in on the long-sought “holy grail” of male contraception: a safe, reversible, ...

When the scientists paired two male octopuses in the same setup, the males interacted by touching arms, but they never attempted to mate. This suggested that a specific, female-derived chemical cue ...

For mating male octopuses, one limb is more important than all others. That is the third right arm or hectocotylus, which is ...

The hectocotylus is both a reproductive and sensory organ, Harvard scientists and others have found. Octopuses are some of the most mysterious animals living in the sea. In research out today, however ...

Cornell scientists have taken a major step toward developing a safe, reversible, long-acting and 100% effective nonhormonal ...

A rare crab found in India shows both male and female traits, helping scientists unlock secrets of sex development and ...

Some male octopuses perform one of the most extreme survival strategies in the animal kingdom, they detach their own arm during reproduction. This bizarre behaviour is not self-harm, but a biological ...

Rep. Yassamin Ansari (D-AZ) speaks outside of the United States Capitol on March 18, 2026 in Washington, DC. It was the summer of 2015. I was living in New York City, working in climate policy at the ...

Male infertility is more common than many people realize—and it often has treatable causes. Learn what factors can affect ...

Scientists discovered that making a very small change to female mice's DNA caused them to develop male reproductive organs.