UC Davis

What if you could draw energy from the night sky without effort? That's the question that researchers at the University of California, Davis are trying to answer with a new engine that generates power simply by sitting under the clear starry heavens.

Engineers at UC Davis have developed a new radar sensor that can pick up movements just 100th the width of a human hair. Better yet, the sensor itself is only the size of a sesame seed and is energy efficient.

When it comes to keeping things cold, ice cubes are hard to beat … although the things do melt. Scientists have set about addressing that limitation, with reusable water-based "jelly ice cubes" that hold their shape at all temperatures.