Animal Eyes

Dog noses are wet to better help them absorb scent chemicals. A special mucus is secreted to help them absorb these special chemicals. Once the chemicals are on the nose, dogs lick them so that they can sample them and understand what it is that they're smelling!

For approximately 200 years, microscope technology remained relatively unchanged. In the 1850s, however, Carl Zeiss, a German engineer, developed improvements for the device! Joseph Jackson Lister also helped eliminate the unequal bending of light hitting the microscope lens, leading to further improvements!

There are over 300 million active Twitter users, making it one of the most popular social media platforms. Every minute, an average of 350,000 new tweets are posted on Twitter! The hashtag was introduced into the digital world in 2007 by Chris Messina. There were doubts the hashtag would catch on, with many believing it appeared too techy. Needless to say, they were wrong!