U.S. Steel mines iron ore in Minnesota and sends it across Lake Superior on freighters a thousand feet long. At Sault Ste.

Chinese astronaut conduct a spherical flame experiment during an orbit to ground space lecture using a match and a candle. Note: Video is in Mandarin - No translation available. Credit: China Central ...

LEDs were once little more than weedy little indicators with low light output. Today, they’re absolute powerhouses, ...