ScienceDaily: Top Science News

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• Scientists show how antibiotics enable pathogenic gut infections
• Spread of crop pests threatens global food security as Earth warms
• Breakthrough in sensing at the nanoscale

Scientists show how antibiotics enable pathogenic gut infections Posted: 01 Sep 2013 12:41 PM PDT A new study could help pinpoint ways to counter the effects of the antibiotics-driven depletion of friendly, gut-dwelling bacteria. In the first 24 hours after administration of oral antibiotics, a spike in carbohydrate availability takes place in the gut, the study says. This transient nutrient surplus, combined with the reduction of friendly gut-dwelling bacteria due to antibiotics, permits at least two potentially deadly pathogens to get a toehold in that otherwise more forbidding environment.

Spread of crop pests threatens global food security as Earth warms Posted: 01 Sep 2013 12:40 PM PDT A new study has revealed that global warming is resulting in the spread of crop pests towards the North and South Poles at a rate of nearly 3 km a year. The study shows a strong relationship between increased global temperatures over the past 50 years and expansion in the range of crop pests.

Breakthrough in sensing at the nanoscale Posted: 01 Sep 2013 12:33 PM PDT Researchers have made a breakthrough discovery in identifying the world's most sensitive nanoparticle and measuring it from a distance using light.

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