High-energy bubbles scour municipal water filters.

Sound waves could provide a greener way to make tap water taste better.

Ultrasound can make bubbles in water that could clean ceramic filters quickly and cheaply, say Linda Weavers and colleagues of Ohio State University, Columbus 1 . When the bubbles burst, they release energy that makes tiny, but fiercely powerful, jets of water that scour the filter’s surface and flush away debris.

Most municipa

A dose of heavy housework will meet new recommended targets for daily physical activity levels, but there is no evidence that it is good for health, finds research in the Journal of Epidemiology and Community Health. Brisk walking is a much healthier option, shows the study.

Over the past 10 years, there has been shift in policy from recommending three bouts of vigorous exercise a week to more moderate activity that fits into a daily routine. This includes housework, gardening, and DIY, on t

About 30 years ago, astronomers realised that the Sun resonates like a giant musical instrument with well-defined periods (frequencies). It forms a sort of large, spherical organ pipe. The energy that excites these sound waves comes from the turbulent region just below the Sun`s visible surface.

Observations of the solar sound waves (known as “helioseismology”) have resulted in enormous progress in the exploration of the interior of the Sun, otherwise hidden from view. As is the case on Eart

Europe’s leading researchers on human health and wildlife impacts of endocrine disrupters will be brought together under a new research “cluster” supported by DG Research which is to contribute €20 million. This cluster project will provide a critical mass for new and existing research on endocrine disrupters and their effect on human health and on the environment. Endocrine disrupters are suspected of causing problems for human health and wildlife. For instance, cases have been reported of fish, fro

ESO telescopes have detected a strange-looking object. Using the ESO 3.6-m New Technology Telescope and the Very Large Telescope (VLT), a team of astronomers [1] have discovered a dusty and opaque disk surrounding a young solar-type star in the outskirts of a dark cloud in the Milky Way.

It was found by chance during an unrelated research programme and provides a striking portrait of what our Solar System must have looked like when it was in its early infancy. Because of its unusual appeara

The problems and issues of sea lice infection in farmed salmon are a major and topical concern for the whole industry. A special issue of the Society of Chemical Industry (SCI) journal, Pest Management Science to be published in May 2002 reports on the prospect of developing an integrated pest management programme for sea lice control.

Presenting an up-to-date comprehensive view of the sea lice problem the twelve papers in this special issue provide overviews on veterinary medicines, biologi