"The universe gave you a better option," one viewer said, while another added: "I think the universe got it right." ...

Royalty-free licenses let you pay once to use copyrighted images and video clips in personal and commercial projects on an ongoing basis without requiring additional payments each time you use that ...

Ring-shaped extrachromosomal DNA is implicated in many cancers. Rachel Brazil talks to the scientists trying to uncover their secrets It was back in 1962 that DNA circles were first spotted in cancer ...