Each year, an estimated one billion birds are killed by a lethal device that has largely escaped the attention of major environmental groups. And while much fuss has been raised over issues ranging from oil spills to power lines, this eco-villain has dwarfed those in its bird-killing capacities. And the villain? Well how about common glass found in windows, which birds fly into each and every day as they see reflections which lead them to their fluttery doom. Fortunately, new bird-friendly glass designs are in the works, and scientists at Swathmore College believe they have a possible solution by etching glass with dots and other patterns enabling birds to see the approaching danger. Here’s hoping scientists can peer through this glassy problem.