From cuddly pool floats to rainbow-colored toast toppings, unicorns--the darlings of Instagram--have never been more exciting or more popular. Are unicorns real? Their popularity and enduring role in human culture certainly is. How can you win a fight against a unicorn? Why do some unicorns have wings? Why are unicorns often pictured with rainbows? Get answers to these questions and more in this fun look at unicorns throughout history.