Gale In Context: Science provides millions of full-text articles from national and global publications covering all disciplines of science including biology, chemistry, earth and environmental science, physics, and more.
This database has scholarly and peer-reviewed journals and is a good choice for most topics.
PLoS has open-access articles covering biology, medicine & science.
peer-reviewed open access journals in biology, medicine, nursing, & related areas
Streaming video from well-known producers like PBS, BBC, and History,
Watch acclaimed documentaries and award-winning educational films about chemical bonding, chemical reactions, elements, and more.
ChemSpider is a free chemical structure database providing fast text and structure search access to over 100 million structures from hundreds of data sources.
PubChem, from the U.S. National Institutes of Health, allows you to quickly find chemical information from authoritative sources.