Scientists at the University of California, Berkeley, have been able to hide three-dimensional objects by using artificially engineered materials that redirected lights around the object. The discovery is one step closer to hiding people and objects from visible light.

The researchers, led by Xiang Zhang, used metamaterials that deflected light, radar or other waves around an object such as water flowing around a smooth stone in a river.

Bullet-proof bras designed to be comfortable and injury-proof have been issued to 3,000 policewomen in Germany for their protection.

The bras are made of cotton or polyester and are padded. Unlike bullet-proof vests, they have no metal or plastic under-wire or fasteners that can pierce skin and injure the wearer when a bullet hit the body armor.

A Pennsylvania casket maker has sued again the Chinese firm it sued in 2006 for the same complaint: selling alleged copies of its coffin in Texas.

The new lawsuit of the York Group prompted a Houston court to temporarily stop the Wuxi Taihu Tractor Co. from selling caskets allegedly resembling the U.S. firm's product effective Wednesday. The first hearing of the case at Houston district court is scheduled on Friday.

A Pennsylvania casket maker has sued again the Chinese firm it sued in 2006 for the same complaint: selling alleged copies of its coffin in Texas.

The new lawsuit of the York Group prompted a Houston court to temporarily stop the Wuxi Taihu Tractor Co. from selling caskets allegedly resembling the U.S. firm's product effective Wednesday. The first hearing of the case at Houston district court is scheduled on Friday.

Researchers at Ohio State University found that people prefer less metal in braces, rating metal braces - such as those worn by the star of "Ugly Betty" - as more unattractive. But they also found that orthodontists say that stainless steel braces are the most effective and easiest for them to handle while they are trying to give patients a more attractive smile.

People say they prefer less visible braces that allow them to see a smile that doesn't flash a mouthful of highly visible metal.