11. The Endless Migration of Monarch Butterflies
Every year, monarch butterflies embark on an extraordinary migration, traveling up to 3,000 miles from North America to the forests of central Mexico. Even more astonishing, this epic journey spans multiple generations, with butterflies somehow inheriting the navigational knowledge needed for the trip. Scientists are still unraveling the secrets behind their precise sense of direction and endurance, making the monarch’s migration one of nature’s great mysteries. Read more