reproduction

Studying the penis of a thistle tortoise beetle may lead to a better design for medical catheters.

Beetle Penises May Hold Clues For Better Medical Devices

4:20pm December 20, 2017

by Rebecca Hersher

Thistle tortoise beetles have enormously long, hooked penises that are rigid in some parts and soft in others. Scientists hope studying the beetle penises could help people design better catheters.

Menopause Mystery: Why Do Female Killer Whales Experience The Change Of Life?

6:22pm January 12, 2017

by Nell Greenfieldboyce

Killer whales are one of only three species known to have menopause. Researchers are looking at the conflict and cooperation between older and younger female whales to understand why.

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Ovarian tissue after the thaw — ready for reimplantation.

Twin Sisters Try To Get Pregnant With Ovaries They Froze In 2009

12:55pm July 19, 2016

by Rob Stein

Each twin had an ovary removed and frozen in 2009, when they were in their 30s, in hopes of buying more time to get pregnant and have babies. But will the thawed, reimplanted ovaries work?

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A couple from Namibia's Twe tribe outside their home. Tribe members took part in a study that examined the relationship between navigation skills and mating success.

Mr. Right Won't Get Lost, Knows How To Pack Bags In A Trunk

2:32pm December 01, 2014

by Susan Brink

Two tribes in Namibia played with computers and looked at maps. The results of these tests shed light on why guys who are expert navigators might father more children than men who get lost.