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These Feminine Smells Get Sperm Moving

Sperm are the cheetahs of the microscopic world: Made of little more than molecular muscle and batteries, tipped with a payload of genetic information, they are optimized for speed. But to orient themselves before their epic, seven-inch sprint (it’s more impressive if you’re less than one three-thousandth that size), they first need to sniff out the location of the egg—and, it turns out, the analogy to the sense of smell may be particularly apt.

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Do Women Who Donate Their Eggs Run a Health Risk?

Maggie Eastman considers it the worst decision she ever made. In 2003, beset by $30,000 in tuition debt and imbued with a burst of altruism, Eastman, a college senior, decided to donate her eggs to help an infertile couple have a baby. Over the next decade she donated nine more times, earning a total of about $20,000 — money that helped Eastman and her then-husband buy a house.

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Zika Vaccine Approved for First Human Testing

Two companies announced Monday that they have received the first approval to test a Zika vaccine on humans. While the approval from the Food and Drug Administration is early in the long process of approving a vaccine for widespread use, it is a step forward in finding a vaccine for the virus, which has become a global health emergency.

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How a Transgender Woman Could Get Pregnant

When Mats Brännström first dreamed of performing uterus transplants, he envisioned helping women who were born without the organ or had to have hysterectomies. He wanted to give them a chance at birthing their own children, especially in countries like his native Sweden where surrogacy is illegal. He auditioned the procedure in female rodents. Then he moved on to sheep and baboons. Two years ago, in a medical first, he managed to help a human womb–transplant patient deliver her own baby boy. In other patients, four more babies followed.

Fertility Clock Headlines, Fertility Headlines

How a Transgender Woman Could Get Pregnant

When Mats Brännström first dreamed of performing uterus transplants, he envisioned helping women who were born without the organ or had to have hysterectomies. He wanted to give them a chance at birthing their own children, especially in countries like his native Sweden where surrogacy is illegal. He auditioned the procedure in female rodents. Then he moved on to sheep and baboons. Two years ago, in a medical first, he managed to help a human womb–transplant patient deliver her own baby boy. In other patients, four more babies followed.