reproduction

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Scientists Confirm Shark's Virgin Birth

Virginia aquarium blacktip got pregnant without need for shark sperm

(Newser) - A blacktip shark at a Virginia aquarium got pregnant despite not having been around a male of her kind for a decade, the Virginian-Pilot reports. Scientists have long suspected that sharks, like some smaller vertebrates, could reproduce asexually but this is only the second confirmed case. Tests showed the baby...

Cell Phones Linked to Sluggish Sperm

Small study sees effect from leaving device in pocket on talk mode

(Newser) - Would-be dads should think twice about keeping cell phones in pants pockets while using wireless headsets, CNN reports, with a small study suggesting that active phones can decrease sperm motility and viability. Semen samples exposed to a cell phone in talk mode contained higher levels of free radicals, which "...

China to Reverse Sterilization for Quake Parents

Couples who abided by one-child policy can get free surgery

(Newser) - China will send medical teams to areas hit by last month’s earthquake to reverse sterilization procedures for couples who want to have another child, Xinhua reports. The Sichuan family planning agency is providing free surgery and counseling to couples who were once sterilized in accordance with the nation's one-child...

Test Counts 'Good Eggs' to Track Fertility

Offers $350 check-up of biological clock; some docs skeptical

(Newser) - Women wondering how much time is left on their biological clocks have a new option, the Chicago Tribune reports. A new test called Plan Ahead, on the market for $350, claims to measure how many high-quality eggs a woman has remaining and thus some indication of childbearing potential. But some...

Women Wired to Fall for Bass Baritones

Study finds evolutionary preference for deep voices

(Newser) - Posh Spice may not agree, but new research shows that women are more drawn to the deep baritone of a Barry White than the higher-pitched squeak of a David Beckham. Studies of the Hadza tribe of Tanzania, whose lifestyle  is similar to that of early man, reveal that men with...

'Male' Panda Gives Birth to Twins
'Male' Panda Gives Birth to Twins
Aug 9, 2007 3:18 PM CDT

'Male' Panda Gives Birth to Twins

Jinzhu turns out to be a 'normal girl' after all

(Newser) - A giant panda once thought to be male gave birth to twin cubs this week in China. Jinzhu was believed to be male at birth, but the panda showed zero sexual interest after being shipped to Japan in 2000 to breed with a female. When scientists attempted artificial insemination, they...

Bad Plastic: It's Practically Everywhere

And it's linked to infertility, obesity, cancer—you name it

(Newser) - It's in everything from baby bottles to coffee makers to CDs, and research is accumulating, as Salon's Elizabeth Grossman puts it, that it's a major health hazard. Bisphenol A is a key ingredient of the lightweight plastics now ubiquitous in consumer products, and it's been variously linked to reproductive health,...

Sperm Made From Bone Marrow
Sperm Made From Bone Marrow
Apr 13, 2007 8:54 AM CDT

Sperm Made From Bone Marrow

Scientists may be able to produce sperm from women's bone marrow

(Newser) - Scientists are getting closer to removing men from the conception equation, announcing yesterday that they have produced early-stage sperm cells from male bone marrow. Now the team of British researchers is seeking ethical approval to try the same thing with women.

UK Women Limited to One Embryo
UK Women Limited to
One Embryo
Apr 2, 2007 8:42 AM CDT

UK Women Limited to One Embryo

Agency will ration IVF to stem problematic multiple births

(Newser) - British women trying to get pregnant via In Vitro Fertilization will be limited to having one embryo implanted at a time, in a move by the government to stem the surge of problematic multiple births, the Guardian reports. Only women with particularly low chances of conception will still be allowed...

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