How awesome is this? The Columbus Zoo and Aquarium has released a video of the birth of baby polar bears.The video is of mother Aurora giving birth to the 2nd-baby in a set of twins. And Aurora’s birthing was not the only one to take place at the zoo this month. On Nov. 8, Aurora’s sister Anana also gave birth to twins. Unfortunately, one of those cubs didn’t survive. According to the zoo, the survival rate past the first few weeks for polar bear cubs is 50%. Because of shrinking polar ice at the North Pole, the polar bear population is considered threatened.