A woman’s fertility starts declining as early as her late 20s – not in her 30s as was previously thought, according to a study published today (Tuesday 30 April) in Human Reproduction*, Europe’s leading journal of reproductive medicine.
The finding comes from a US-Italian study of 782 healthy couples who were using natural family planning methods to avoid pregnancy.

US-based lead author Dr David Dunson said that, to his knowledge, this was the first study to observe that a woman’s fertil

Succession of relationships keeps heavenly bodies young

Astronomers have uncovered a scandalous degree of promiscuity in the cosmos. Clusters where stars gather more densely than usual are veritable hotbeds of partner-swapping. Some stars engage in half a dozen or so relationships during their lifetime 1 .

Star clusters range from loose groups of ten thousand or so stars to dense globular clusters of a million or more. They exist throughout galaxies like ours

Animals may have beaten upright plants to land.

The oldest fossils of footprints ever found on land hint that animals may have beaten plants out of the primordial seas. Lobster-sized, centipede-like animals made the prints wading out of the ocean and scuttling over sand dunes about 530 million years ago. Previous fossils indicated that animals didn’t take this step until 40 million years later.

“It’s staggering that we thought for all this time that animals appeared on land

It sounds like a photographer’s worst nightmare: the light of the flashbulb causes the subject of the photo to burst into flames. But that’s exactly what happened recently when researchers snapped a picture of some single-walled carbon nanotubes, tiny cylinders of pure carbon. The findings, described in a report published in the current issue of the journal Science, suggest that the minute straws could be used as triggering devices or for remote light-induced ignition.

The discovery was ma

The scientists from I.P. Pavlov Institute of Physiology, Russian Academy of Sciences, have investigated the intellectual abilities of chimpanzees in comparison with the children from a nursery school in Koltushy near St. Petersburg. They asked both to build the pyramids of cubes of different size. The children with the retention of speech development aged from 2 to 7 and two chimpanzees, female (aged 7) and male (aged 11) ones, took part in the experiment. The children and the apes were shown a pyra

Researchers at the University of Warwick’s Warwick Process Technology Group have devised a process that turns wet waste from sewage farms and paper mills into a source of power.

University of Warwick researcher Dr Ashok Bhattacharya and his team are part of a Europe wide consortium that have cracked the problem of how to extract very pure levels of hydrogen from wet bio-matter, such as sewage or paper mill waste. This very pure hydrogen can then be used in “fuel cells” to power homes, factor