They can repair your vision with just one treatment and measure the distance from the Earth to the moon within a millimeter. They are in supermarket scanners and compact disc players. What are they? Lasers. Theorized by Albert Einstein in 1917 and invented in 1960, lasers have proven to be a versatile high-tech solution to …

Fan voting begins this month for the Major League Baseball All Star Game to be held on July 10 in Kansas City. With the talent on the field being paid hundreds of millions of dollars in some cases, are all star games still worth the risk for owners and for fans with an emotional stake …