Researchers propose new building guidelines to clean up city air

As urban populations expand, downtown buildings are going nowhere but up. The huge energy needs of these skyscrapers mean that these towers are not only office buildings, they're polluters with smokestacks billowing out toxins ...

Skydiver aims to break sound barrier in free fall

His blood could boil. His lungs could overinflate. The vessels in his brain could burst. His eyes could hemorrhage. And, yes, he could break his neck while jumping from a mind-boggling altitude of 23 miles (37 kilometers).

Microstructural improvements enhance material properties

Exquisite buildings like the Eiffel Tower were made possible because of advances in structural engineering design methods. Truss structures, like the Eiffel Tower, are highly efficient; they can carry the same loads as solid ...

New York police launch high-tech surveillance

New York police on Wednesday launched what officials say is a revolutionary camera surveillance system that will simultaneously scan the streets and call up data on suspects.

Wind experts advise on revolutionary wind-powered skyscraper

The infamous winds that gust through downtown San Francisco streets, overturning kiosks and sometimes toppling pedestrians, will help to power a revolutionary skyscraper set to open next fall -- and could pave the way for ...

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