Caterpillars live an interesting life -- their sole purpose is to consume as much food as they can, before they turn into butterflies or moths. It works for them. Take our quiz and learn more about how the caterpillar works.
Cicada singing is often heard during the hot summer months. The distinctive high-pitched noise often fills the air. Have you ever wondered why the cicadas produce this noise. Find out the answer to this question in this HowStuffWorks article.