The cloning craze began in 1996, when scientists in Scotland astonished the world by announcing that they had successfully cloned an adult sheep. They called her Dolly. A clone is a copy of…
Fossils are the remains or imprints of prehistoric plants or animals. They are found in sedimentary rock (rock formed from sand and mud), coal, tar, volcanic ash, fossilized tree sap or frozen in…
Why do leaves change color in the fall? One of the sure signs of fall (besides the beginning of a new school year) is the change in color of leaves from green to bright yellow, orange and red.…
The first zoo in the U.S. opened in Philadelphia in 1859. Today, there are more than 200 zoos in the U.S., far more than in any other country. Here are some top U.S. and foreign zoos. San Diego…
—By Christine Frantz That kitty sitting on your lap can now boast of her own family history. A research team, lead by Warren E. Johnson of the National Cancer Institute, studied the DNA of 37…
Neither Fish nor Tetrapod Several times a year popular science articles breathlessly announce the discovery of a “missing link,” but in the case of the recently identified fossils of an odd…
Conservation efforts help population of bald eagle increase from 400 to 10,000 over 40 years by Beth Rowen Bald Eagle Related Links Endangered and Threatened SpeciesWhy Do Animals Become…
