Common viral infections in early childhood do not protect against allergy, concludes research in Thorax. If anything, the evidence points to an increased risk.

The findings contradict the increasingly popular if general theory that the rise in prevalence of allergies and asthma is partly attributable to the fact that children are less frequently exposed to viral infections early in life – the so-called ‘hygiene hypothesis.’

The research focused on 889 pregnant Danish women, who wer

Peptic ulcer surgery seems to increase the risk of developing pancreatic cancer, finds research in the Journal of Clinical Pathology.

Pancreatic cancer is the fifth leading cause of death from cancer, largely because the prognosis is so poor.

Dutch researchers monitored the progress of 2633 patients who underwent surgery for the removal of a peptic or duodenal ulcer between 1931 and 1960. A preliminary analysis suggested that these patients had double the risk of developing pancrea

The most comprehensive picture yet of how dinosaurs evolved has been produced by a team at Bristol University.

More than 1,000 species of dinosaurs have been named since the first skeletons were dug up in the 19th century, and unravelling their patterns of evolution has been a major area of research.

Since 1980, over 150 evolutionary trees of dinosaurs have been published, most of them looking at small groups of species. The Bristol researchers have put all of these smaller

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