Activities for students and lesson plan ideas based on Times articles, photos, videos and graphs. What Role Does Music Play in Your Life? Teens in Philadelphia are trying to make safer neighborhoods.

Machine learning is the ability of a machine to improve its performance based on previous results. Machine learning methods enable computers to learn without being explicitly programmed and have ...

How did viruses evolve? Are they a streamlined form of something that existed long ago, or an ultimate culmination of smaller genetic elements joined together? Aa Aa Aa The evolutionary history of ...

One of the easiest ways to save a webpage is to save it as a PDF. Converting a webpage into PDF makes important documents immediately accessible, like receipts or any page that you may not be able to ...