cicadas

Why do Cicadas make such a loud racket during the summer?
You get up every morning, grab some breakfast, and then your off to work or school but all of the sudden you hear a loud screeching sound coming from the trees. These are insects known as cicadas and there are a couple reasons as to how and why they make such a pulsating sound.
Are You Ready For The Cicada Invasion?
National Geographic's website describes them this way, "Shrimp sized bugs with transparent wings and beady red eyes", and they say millions are on the way. The Cicada invasion of 2013 is coming. Great.