New Yorkers marvel at 'Manhattanhenge' sunset

New Yorkers gathered at dusk to witness "Manhattanhenge" -- a rare alignment of the sun with the east-west street grid in which it appears to set between skyscrapers.

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).

New nature and science museum to open in Dallas

(AP)—When the new Perot Museum of Nature and Science opens, visitors will be able to feel the ground shake beneath them in an earthquake simulation, program a robot to navigate a maze and even test their speed against a ...

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 ...

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