Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...

Looking to inspire the next generation of curious minds? These are our picks of the best popular science books for children ...

Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries ...

Scientific American is the essential guide to the most awe-inspiring advances in science and technology, explaining how they change our understanding of the world and shape our lives.

8 Seconds. We are honoring the Top 10 winners of our Student Open Letter Contest by publishing their entries. This one is by Emma Hua, age 16. By The Learning Network ...

Are you a teacher? Would you like to earn some extra money this summer? Check out these flexible, part-time, online summer ...