Archive for May, 2009

The Science Behind Female Ejaculation

Posted in Science with tags , , , , , , , , , on May 28, 2009 by neandergal

Proper discussion and research on female sexuality and in particular, female ejaculation has been a long time coming. Female ejaculation is often dismissed as myth and mainly attributed to loss of bladder control at the time of orgasm. This is of course still true for some cases, but not all.

Laboratory analysis of fluid expelled from a small group of females who claim to experience female ejaculation tells a different story. A recent report, Everything you always wanted to know about female ejaculation (but were afraid to ask) in New Scientist describes how researchers found significant quantities of the protein prostate-specific antigen (PSA) present in in the fluid. Prostate cells in the male prostate gland produce PSA which is present in serum and semen.

Ultrasounds of the women who experienced female ejaculation showed evidence of a structure surrounding the urethra that is similar to the male prostate gland. The area of the female prostate is located near the G-Spot and is most sensitive to sexual arousal. It appears that stimulating the G-Spot also stimulates the female prostate resulting in ejaculation.

“Ida” Hype

Posted in Science with tags , , , , , , , , , , , on May 28, 2009 by neandergal

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It is unfortunate to have such a magnificent discovery like the 47 million year old fossil “Ida” or Darwinius masillae marred by the mass media that interject misleading statements such as the “missing link” and “how it will change everything” in regard to human evolution.

New Scientist explains that the discussion is on where Ida split off in the evolutionary tree and not whether she is the “missing link”.

New Scientist interviews the palaeontologist, Jørn Hurum at the University of Oslo in Norway who sets the fossil record straight in regard to recent hype.

On the one hand he applauds that the media coverage encourages public discussion on primate evolution, but on the other hand negates this progress because creationists use the misinformation by the media against evolutionary biologists.

Inaccurate and hasty reporting inadvertently discredits science. Creationists like Creation Ministries International hijack the hype of Ida and use it to further discredit science in the eyes of the public.

A Most Bizarre Sex Act

Posted in Science with tags , , , , , , , , on May 24, 2009 by neandergal

Spiders weave a tangled sexual web that leads to stiffer competition for passing on their genes. Scientific American reports on a recent study published in the May 2009 issue Evolution that shows how the genitalia of Nephilid and Golden Orb Weaver spiders evolved from simpler to more complex structures.

Male spiders that had more hooks, ridges and twists on their palps stood a greater chance of passing on their genes then their less complex competitors. When the male copulates with the female, the palp breaks off inside the female so there is a greater chance of his sperm fertilizing the female’s eggs. He is not only content from giving her his all, but will stick around her web and chase off any competitors. Female ducts evolved from those that gave straight easy access to more convoluted ducts with twists and turns making it harder for penetration by males lacking the right equipment.

The Longest Penis in the Animal Kingdom!

Posted in Science with tags , , , , , on May 22, 2009 by neandergal

According to a report in New Scientist, hermaphroditic filter-feeders have the longest penises in proportion to their body size in the animal kingdom. Their penis can reach up to eight times their body length. And what’s more length isn’t everything. It appears that stoutness is more beneficial for mating. A stouter more muscular penis is better than a long flexible one…