A robot submarine expedition under the Antarctic sea ice has discovered a major food reserve in the Southern Ocean. The findings, reported this week in SCIENCE, show a dense band of the shrimp-like krill under the ice, five times more concentrated than in open water. The importance of sea ice as a nursery for krill – key food for penguins, whales and fish – has long been suspected, but these are the first large scale measurements.

Scientists from the British Antarctic Survey, the Open Univer

A molecular pump that helps to keep cells flush with energy has been visualised by scientists at Imperial College, London.

The structure of the pump, a key enzyme in bacterial respiration, reveals for the first time one of the molecular mechanisms that underpins cellular respiration, and confirms a Nobel Prize-winning theory proposed over 40 years ago by Briton Peter Mitchell.

Professor So Iwata and colleagues from the Laboratory of Membrane Protein Crystallography, Imperial Colleg

pparently credible websites may not necessarily provide higher levels of accurate health information, finds a study in this week’s BMJ.

Researchers examined the relation between credibility features and accuracy of contents of 121 websites that provided information on five common health topic: chronic obstructive pulmonary disease, ankle sprain, emergency contraception, menorrhagia, and female sterilisation.

The entire contents of the selected websites were assessed for three credib

Most smokers are disenchanted with smoking and would not smoke if they had their time again, according to a letter in this week’s BMJ. It also shows that smokers’ expectations of how soon they will quit greatly exceed rates of quitting observed in recent history.

A national sample of 893 smokers were asked: “If you had your time again would you start smoking?” Over 80% said that they would not (79% men, 87% women). Those aged 45 to 64 were most regretful, with 90% saying that they would not

A team of chemists and physicists at the Universities of Liverpool and Oxford have shown that hydrogen transmits magnetism. This discovery could be the first step to a new class of magnetic materials, and opens up a new field of chemistry.

The team, headed by Professor Matthew Rosseinsky of the Department of Chemistry, University of Liverpool, and including Dr Stephen Blundell of the University of Oxford, has prepared a new magnetic oxide material in which for the first time the dominant ma

Patients on new Angina Plan report 40% reduction in angina attacks per week New research published in the British Journal of General Practice revealed that patients on the York Angina Plan, compared to those receiving a conventional educational session, reported a 40% reduction in the number of episodes of angina per week (a reduction of three from the baseline mean of seven attacks). This was despite the fact that they were more active. They also showed a lower level of anxiety and d