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Men don’t last very long in bed – and it bothers them more than it bothers women

Reports suggest that “an astonishing 45 per cent of men finish the sex act too quickly”.

In a piece on Nerve.com, Harry Fisch, author of the new book The New Naked: The Ultimate Sex Education for Grown-Ups, reports that “an astonishing 45 per cent of men finish the sex act too quickly”. How quickly? Within two minutes, according to Fisch. This would seem to be bad news for those men’s partners and good news for the posthumous reputation of sex researcher Alfred Kinsey, whose research in the 1940s and 1950s concluded that three-quarters of men usually ejaculated within two minutes.

Before you conclude that Fisch's data simply represents more evidence of a male-dominated society’s inherent pleasure inequality, it’s worth noting that more recent scholars have looked into the question of what the different sexes actually think about it. As it happens, men may be more bothered by it than women. For a 2004 paper in the Journal of Sex Research, University of New Brunswick researchers S Andrea Miller and E Sandra Byers interviewed 152 heterosexual couples on their “actual and desired duration of foreplay and of intercourse”. Their subjects spanned a wide range of ages – 21 to 77 years old – and relationship type – from 6-month to 50-year partnerships. Miller and Byers found that men reported a much longer ideal duration than did their partners. 

It's true that for both sexes, the “ideal” length of both foreplay and intercourse was much longer than the actual. But the New Brunswick results at least suggest that the men are not happy with this status quo. 

Fisch also points out that two minutes is “way too speedy for the average woman to be able to have an orgasm through vaginal penetration alone”. But an even older piece of research suggests that link might not be quite so clear. In a 1951 paper in the Journal of Psychology, “Correlates of orgasm adequacy in a group of 556 wives,” psychologist Lewis Terman found no significant correlation between intercourse duration and female “orgasm adequacy”. Alas, the concept of speed has not fared as well in more recent research. In a 2009 paper in The Journal of Sexual Medicine, Czech psychologists Petr Weiss and Stuart Brody found, based on surveys with 2,360 Czech women, that women’s chance of having an orgasm was much more highly correlated with duration of sex than of foreplay.

The good news here is that, according to Fisch, the average duration is 7.3 minutes – only 4 minutes less than women’s “ideal”.

This article first appeared on newrepublic.com

Yu Ji/University of Cambridge NanoPhotonics
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Nanoengine evolution: researchers have built the world’s smallest machine

The engine could form the basis of futuristic tiny robots with real-world applications.

Richard P Feynman, winner of the Nobel Prize in Physics in 1965, once remarked in a now-seminal lecture that a time would come where we would “swallow the doctor”. What he meant, of course, was the actualisation of a science-fiction dream – not one in which a universal cure-all prescriptive drug would be available, but one in which society would flourish through the uses of tiny devices, or more specifically, nanotechnology. 

First, a quick primer on the field is necessary. Nanoscience involves the study and application of technologies at an extremely tiny scale. How tiny, you ask? Given that one nanometre is a billionth of a metre, the scale of work taking place in the field is atomic in nature, far beyond the observational powers of the naked human eye.

Techno-optimists have long promoted potential uses of nano-sized objects, promising increases in efficiency and capabilities of processes across the board as a result. The quintessential “swallow the doctor” example is one which suggests that the fully-realised potential of nanotechnology could be applied to medicine. The idea is that nanobots could circulate our bodily systems in order to reverse-engineer the vast array of health problems that threaten us.

It’s natural to be sceptical of such wild aspirations from a relatively young field of study (nanoscience unofficially began in 1959 following Feynman’s lecture “There’s Plenty of Room at the Bottom”), but associated research seems to be gaining widespread endorsement among prominent scientists and enthusiasts. Ray Kurzweil, Director of Engineering at Google, thinks a booming nanotechnology industry is crucial in the creation of a technological singularity, while futurist and viral video philosopher Jason Silva believes the technology will help us cure ageing.

The high-profile intrigue surrounding nanotechnology means that word of any significant developments is certain to stimulate heightened interest – which is why researchers’ achievement in building the world’s tiniest engine this month is so significant.

Reporting their results in the journal Proceedings of the National Academy of Sciences, the University of Cambridge researchers explained how the nanoengine was formed and why it represented a key step forward in the transition of the technology from theory to practice.

The prototype nanoengine is essentially composed of charged particles of gold, bound by polymers responsive to temperature in the form of a gel. The engine is then exposed to a laser which beams and heats the device, causing it to expel all water from the polymeric gel. The consequence of this is a collapsing of the gold particles into an amalgamated, tightened cluster. Following a period of cooling, the polymer then begins to reabsorb the water molecules it lost in the heating process, resulting in a spring-like expansion that pushes apart the gold particles from their clustered state.

"It's like an explosion," said Dr Tao Ding from Cambridge's Cavendish Laboratory. "We have hundreds of gold balls flying apart in a millionth of a second when water molecules inflate the polymers around them."

The process involved takes advantage of the phenomenon of Van der Waals forces – the attraction between atoms and molecules. The energy from these forces is converted into elastic energy, which in turn is rapidly released from the polymer. "The whole process is like a nano-spring," said Professor Jeremy Baumberg, who led the research.

Scientists have been tirelessly working towards the creation of a functional nanomachine – one which can effortlessly swim through water, gauge its surroundings and communicate. Prior to the research, there was a difficulty in generating powerful forces at a nanometre scale. These newly devised engines, however, generate forces far larger than any previously produced.

They have been named “ANTs”, or actuating nano-transducers. "Like real ants, they produce large forces for their weight. The challenge we now face is how to control that force for nano-machinery applications," said Baumberg.

In an email exchange with New Statesman about the short-term and long-term goals in bringing this engine closer to a practical reality, Baumberg said: “It allows us for the first time, the prospect of making nano-machines and nanobots. The earliest stage applications we can see are to make pumps and valves in microfluidic systems. Microfluidic chips are really interesting for synthesising pharmaceuticals, biomedical sensing and separation, as well as many other biochemical processes.

“But all pumps and valves currently need to be made with hydraulics, so you need a pipe onto the chip for each one, limiting strongly the complexity of anything you do with them. We believe we can now make pumps and valves from the ANTs which are each controlled by a beam of light, and we can have thousands on a single chip. Beyond this, we are looking at making tiny nanomachines that can walk around, controlled by beams of light.”

The embedding of nanobots into all facets of culture is still a long way off, and researchers will need to find a way of harnessing the energy of nanoengines. However, the prospect of one day seeing the fruition of nanorobotics is worth all the patience you can get. The tiniest robot revolution has just begun.