Sexual Reproduction in Space Will Likely be Impossible Says Nasa

reproduction in space

Sexual reproduction is likely to be impossible in space due to cosmic radiation bombarding the human body.

Researchers at the agency’s Ames Research Centre in California found that without effective shielding on spacecraft, powerful proton particles would probably sterilize any female embryo conceived in deep space.

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‘Hormonal’ Women Have Prettier Faces

face-estrogen

Typical female face with high (left) and low (right) oestrogen levels

Women with high levels of the sex hormone oestrogen have prettier faces, research suggests.  The findings make evolutionary sense – men are attracted to the most fertile women, the University of St Andrews team told a Royal Society journal. (pics)

 

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‘Religiosity Gene’ Predicted to Dominate Society in the Future

amish-kids

A  study has investigated how the differing fertility rates between religious and secular individuals might affect the genetic evolution of society overall.

In the past 20 years, the Amish population in the US has doubled, increasing from 123,000 in 1991 to 249,000 in 2010. The huge growth stems almost entirely from the religious culture’s high fertility rate, which is about 6 children per woman, on average. At this rate, the Amish population will reach 7 million by 2100 and 44 million by 2150. On the other hand, the growth may not continue if future generations of Amish choose to defect from the religion and if secular influences reduce the birth rate. In a new study, Robert Rowthorn, emeritus professor of economics at Cambridge University, has looked at the broader picture underlying this particular example: how will the high fertility rates of religious people throughout the world affect the future of human genetic evolution, and therefore the biological makeup of society?

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Could Your Laptop Be Cooking Your Testicles?

man with laptop

Even with a lap pad under the computer, men’stesticles overheat quickly.

Whoever invented the ‘laptop’ probably didn’t worry too much about male reproductive health.  Turns out, unsurprisingly, that sitting with a computer on your lap will crank up the temperature of your nether regions, which could affect sperm quality.

 

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‘Gender Bending’ Chemical Now Linked to Male Infertility

impotent

Bisphenol-A (BPA) linked to male infertility.

A controversial chemical used for decades in the mass production of food containers and baby bottles has been linked to male infertility for the first time.  Bisphenol-A (BPA), known as the “gender bending” chemical because of its connection to male impotence, has now been shown to decrease sperm mobility and quality.

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Strong Immunity at Cost of Fertility?

“its A Bhaaaaaad Trade off”

Strong immunity may play a key role in determining long life, but may do so at the expense of reduced fertility, a Princeton University study has concluded. An 11-year study of a population of wild sheep located on a remote island off the coast of Scotland that gauged the animals’ susceptibility to infection may give new insight into why some people get sicker than others when exposed to the same illness.

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‘Toasted Skin Syndrome’ Caused by Laptops

toasted skin syndrome

A 12-year-old boy shows off the ‘toasted skin’ on his leg after using a laptop for several hours a day.

Balancing your laptop on your knees could be bad for your skin, doctors have warned.  The heat generated by the ubiquitous devices can cause ‘toasted skin syndrome’ – a nettle sting-like rash that can cause permanent discoloration and, in rare cases, cancer.

 

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Certain Types of Fertility Treatments May Alter Gender Balance

Louise Brown

The world’s first ‘test tube baby’, Britain’s Louise Brown, holding the Veary twins who were also born via IVF treatment.

Certain types of assisted fertilization appear to result in more male than female babies being born, a large study in Australia and New Zealand has found.

 

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New Fertility Treatment to Turn Back Biological Clock

biological_clock

New technique turns biological clock back.

A new fertility technique could herald the end of the ‘ biological clock — by allowing women to have babies well into their 50s and 60s.  The treatment, to be unveiled at the World Congress of Fertility and Sterility conference in Munich, Germany, uses injections of stem cells to restore egg production.

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Study Finds Women with Hourglass Figures Most Attractive

jessica alba

Jessica Alba has the best figure, say scientists.

Researchers found a woman having an “hourglass” shaped figure was more important for a man than her breast size or facial features.  A perfect waist is what men consider the most attractive feature in women, say scientists who calculated the ratio for the ideal figure in a female body.

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Scent of a Woman: Men’s Testosterone Responses to Olfactory Ovulation Cues

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Study: Going “au natural” may be the best way to capture a man’s attention

Women around the world spend billions of dollars each year on exotic smelling perfumes and lotions in the hopes of attracting a mate. However, according to a new study in Psychological Science, a journal of the Association for Psychological Science, going “au natural” may be the best way to capture a potential mate’s attention.

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