Wireless 'tooth tattoo' detects harmful bacteria

Using silk strands pulled from cocoons and gold wires thinner than a spider's web, researchers at Princeton University have created a removable tattoo that adheres to dental enamel and could eventually monitor a patient's ...

Long-Awaited 'Alex' Android eReader Ready For Pre-Orders

(PhysOrg.com) -- You can preorder the first Alex Reader today... finally! Alex, the first Google Android-powered eReader will ship to preorders in mid-April, five months after its announcement made a huge splash last October. ...

Researcher Uses Graphene Quilts to Keep Things Cool

(PhysOrg.com) -- University of California, Riverside Professor of Electrical Engineering and Chair of Materials Science and Engineering Alexander Balandin is leading several projects to explore ways to use the unique capabilities ...

Plasma thruster: New space debris removal technology

The Earth is currently surrounded by debris launched into space over several decades. This space junk can collide with satellites, causing damage and creating more debris. To preserve a secure space environment, the active ...

Dam removal study reveals river resiliency

More than 1000 dams have been removed across the United States because of safety concerns, sediment buildup, inefficiency or having otherwise outlived usefulness. A paper published today in Science finds that rivers are resilient ...

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