Detecting program-tampering in the cloud

For small and midsize organizations, the outsourcing of demanding computational tasks to the cloud—huge banks of computers accessible over the Internet—can be much more cost-effective than buying their own hardware. But ...

Better than X-rays: A more powerful terahertz imaging system

(Phys.org) —Low-energy terahertz radiation could potentially enable doctors to see deep into tissues without the damaging effects of X-rays, or allow security guards to identify chemicals in a package without opening it. ...

US power grid costs rise, but service slips

America's power grid is like an old car. It gets the job done, even if its performance is slipping. But the repair bills go up every year and experts say only a major overhaul will reverse its decline.

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