Invisibility Cloak Made From Simple Mirrors Can Stop Time Indefinitely

Invisibility cloak made from simple mirrors can stop time indefinitely
Researchers at Northwestern University have designed an invisibility cloak that can temporally hide objects for an indefinite period of time. Objects covered by this invisibility cloak wouldn't disappear from sight, but rather it would appear that time has completely stopped for the cloaked object. A clock, for example, would continue to tick -- but to the human observer, the hands would never move.

Plastic solar cells' new design promises bright future
Harvesting energy directly from sunlight to generate electricity using photovoltaic technologies is a very promising method for producing electricity in an environmentally benign fashion. Polymer solar cells offer unique attractions, but the challenge has been improving their power-conversion efficiency. Now a research team reports the design and synthesis of new polymer semiconductors and reports polymer solar cells with fill factors of 80 percent -- a first. This number is close to that of silicon solar cells.

First hundred thousand years of our universe
Researchers have taken the furthest look back through time yet -- 100 years to 300,000 years after the Big Bang -- and found tantalizing new hints of clues as to what might have happened.