Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sit...

Princeton University is a vibrant community of scholarship and learning that stands in the nation's service and in the service of all nations.

YouTube is a place to discover, watch, upload and share videos.

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Twitter is without a doubt the best way to share and discover what is happening right now.

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with fr...

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest qualit...

University of Michigan is one of the top universities of the world, a diverse public institution of higher learning, fostering excellence in research....