Excellent Free Web Sites for the Sciences

Earthtrends-the Environmental Information Portal
http://earthtrends.wri.org/
A comprehensive online database focusing on environmental, social, and economic trends. Data is from reliable sources and is in a variety of formats.


Eric Weisstein’s World of Science: A Wolfram Web Resource
http://scienceworld.wolfram.com/
This site features biographies and explanations of topics in mathematics, physics, astronomy, and chemistry.

Math Forum
http://mathforum.org
From Drexel University, this site is a comprehensive resource for Math education assistance containing hands-on web learning tools, lesson plans, and activities for pre-kindergarten through college courses.

NATIONALGEOGRAPHIC.COM
http://www.nationalgeographic.com/
Official website of the National Geographic Society and designed for educators and students. Featuring easy navigational tools, this is a multimedia database that promotes and provides access to geographic knowledge and brings about awareness of the need to protect the planet’s natural resources.

NIST Chemistry WebBook
http://webbook.nist.gov/chemistry/
The NIST Chemistry WebBook contains thermochemical data for over 7000 organic and small inorganic compounds, reaction thermochemistry data for over 8000 reactions, IR spectra for over 16,000 compounds, mass spectra for over 15,000 compounds, UV/Vis spectra for over 1600 compounds, electronic and vibrational spectra for over 4500 compounds, constants of diatomic molecules (spectroscopic data) for over 600 compounds, ion energetics data for over 16,000 compounds and thermophysical property data for 34 fluids.

NSSN National Resource for Global Standards
http://www.nssn.org/search.html
The NSSN National Resource for Global Standards contains over 250,000 references to standards from more than 600 national, foreign, regional and international bodies worldwide. This, the free version, searches approved industry standards, approved international standards (ISO, IEC, ITU), approved U.S. government standards, and the American National Standards Institute (ANSI) catalog.

Plants Database
http://plants.usda.gov
This database provides a wealth of information about plants growing in the United States. All types of plants are covered, from noxious weeds to ornamental flowers and food crops. It is aimed at state agricultural agencies, plant researchers, students, and the general public.

ScienceDaily Magazine
http://www.sciencedaily.com/
Contains headlines and links to the day’s top science news stories, as well as links to major subject areas in science, health, and computing.

Where to find MSDS [Materials Safety Data Sheets] on the Internet http://www.ilpi.com/msds/index.html
Material Safety Data Sheets (MSDS) are an essential resource for those working with hazardous chemicals and include physical and chemical characteristics, hazards, safe handling, emergency and first aid procedures and more. “Where to Find MSDS on the Internet?provides descriptions of and links to over 100 free MSDS collections available on the Internet.