Take a look back at many of the most fascinating science stories of 2018. Discover how a young woman who fell into a cave 3.7 million years ago is rewriting our understanding of early human history. Learn how space missions are unraveling the mysteries of our universe. See the year in a new light!

Mystery Signal From Space

They've captured our imagination and are a source of childlike wonder, but what exactly are rainbows? Learn the science behind these weather phenomenon and how one day they might help pinpoint habitable planets in deep space.