Monarch butterflies are the only insect to migrate up to 2,500 miles to get out of the cold weather and hibernate. But not all monarch butterflies migrate; only the fourth generation of monarchs can migrate each year because the first three generations die after about six weeks from escaping their cocoons. Monarch Butterflies are also known for their capacity of making transatlantic crossings.
Dürers Rhinoceros, 1515. At the time of this drawing, a live rhinoceros had not been seen in Europe since Roman times. Dürer based his drawing on descriptions of the animal and a rough sketch from an unknown artist. A live specimen finally arrived in Portugal in 1577, 62 years after Dürer completed his drawing and woodcut.
Grand Prismatic Spring at Yellowstone National Park.
Archaeobacteria give hot springs their color. Most feed off the earths heat, but cyanobacteria use the suns energythey are an ancestor of all plant life on earth.