Countdowns

Top 10 Most Incredible Animal Journeys

Animals will make extraordinary and often mysterious expeditions to find a good meal, sexy mates, and the perfect place to raise a family. This month, billions of cicadas will burst out from their 17-year-old hiding places to complete one of the longer journeys in time, while moving only a few inches from burrow to daylight. Other migrations cover thousands of miles. - Corey Binns