Tiny metal particles have been shown to cause damage to DNA across a cellular barrier - without having to cross it. Full story...
Researchers have demonstrated a device that can kill off superbugs such as MRSA in just seconds - and could help with body odour.
The government needs to update its guidance on the impact of noise from wind turbines, a campaign group says.
The last remaining population of Siberian tigers has declined significantly, according to a recent survey.
The field of "spintronics" - a future means of computing - is shown to work at room temperature for the first time.
A warning is issued to ships in the southern Pacific after more than 100 iceberg were spotted drifting towards New Zealand.
President Obama is to pledge to cut greenhouse gas emissions in several stages, including 42% by 2030, officials say.
Astronomers have devised a web-based game that could help work out the basis of galactic collisions.
Cutting emissions to mitigate climate change will also make people healthier, according to research.
Ministers back calls to plant millions of trees across the country to help combat climate change.
A gene known to shield the body from harmful chemicals may also protect against bowel cancer, a study suggests.
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