Denver Public Library: Teens: Homework Help

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Gale Virtual Reference Library Full-text science, medicine & health books online.

Student Resource Center Articles and resources on tons of science topics. Search Tips (PDF)

General Science Articles Magazines and journals focused on science

GreenFILE All aspects of human impact on the environment including global warming, green building, pollution, sustainable agriculture, renewable energy, recycling and more.

Health & Wellness Resource Center Information on health, medicine, and wellness. The material is intended for informational purposes only.

AskColorado - Need help finding information for your homework right now? Chat live with a librarian 24/7.

Multnomah County Library Science Links

Khan Academy Videos on biology, chemistry, physics and more.

Ask the Astronomer Answers to thousands of questions.

HubbleSite.org The latest information from the Hubble Telescope.

Nine Planets A multimedia tour of the solar system.

Overview of the Solar System Our solar system and beyond from NASA.

Windows to the Universe A user-friendly learning system covering the Earth and Space sciences. En español.

Biology Online Ideal for homework help, this site includes a biology dictionary, tutorials and links to more biology help online.

Online Biology Book Excellent resources, numerous diagrams, and well-written explanations.

Virtual Frog Dissection Kit Virtual online frog dissection.

Forensic Science Covers DNA fingerprinting, autopsy procedures, toxicology and much more.

Genetics Dictionary Talking glossary of genetic terms.

Genetics Primer Discusses cells Prokaryotic & Eukaryotic, genome, genes, replication, transcription, translation, cell division and much more!

Human Genome Project All about the project as well as Spanish language resources and Genetics 101.

Genetics and Ethics Critical issues and legislation surrounding genetic research.

Audubon Society Audubon's mission is to conserve and restore natural ecosystems, focusing on birds, other wildlife, and their habitats for the benefit of humanity and the earth's biological diversity.

Animal Diversity An online database of animal natural history, distribution, classification and conservation biology.

Biomes of the World Information on the world’s major communities, classified according to the predominant vegetation and the adaptation of organisms.

Periodic Table of Elements Lots of information on all elements.

General Chemistry Online Glossary, tutorials and chemistry exam survival kit.

World Physics Easy to understand topics in all areas of physics.

The Physics Classroom Physics concepts explained with quizzes to test your understanding.

Encyclopedia of Earth An electronic reference about the Earth, its natural environments, and their interaction with society.

Earth & Climate News Natural disasters, global warming, rainforests and other environmental issues.

BAM! Body and Mind BAM! will tell you all you need to know about all the stuff that matters – nutrition, diseases, your body and life challenges.

Medline Plus Trusted information with tutorials, illustrated encyclopedia and the latest health news.

Science Experiments Magazine, journal and reference articles.

Science Buddies Free science fair projects, ideas, answers and tools.

Sciencehound Science Fair Projects Browse hundreds of projects with complete instructions.