Scientists Say You Can Only See This New Color by Shooting Lasers Into Your Eyes. Not So, Says Stuart Semple / 'Squishy' lasers could reveal how tumors and babies grow / Physicist's model and predictions may have applications in the new generation of superradiant lasers / Lasers smaller than a human hair emit doughnut-shaped light / How scientists lasered in on a 'monumental' Maya city — with actual lasers