Reference tools for science, nature and technology

Return to Science, Nature and Technology

General Science
Physical Sciences and Mathematics
Earth and Climate
Biology and Natural History
Technology

General Science

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Scholarpedia
Peer-reviewed open-access encyclopedia, where knowledge is curated by communities of experts

Library of Congress Selected Internet Resources in Science and Technology

Science.gov
Dozens of databases and thousands of websites providing authoritative federal science information

Wolfram Alpha: computational knowledge engine
Ask Wolfram Alpha your science and math questions

Eric Weisstein's World of Science by Wolfram Research
Covering Mathematics, Physics, Chemistry, Astronomy and Scientific Biography

World Wide Science: The Global Science Gateway
National and international databases and portals

National Science Digital Library: Serving science, technology, engineering, and mathematics education

Physical Sciences and Mathematics

The Feynman Lectures on Physics
Decades after their publication, these lectures are still one of the best overviews of physics

The Theoretical Minimum
Courses for the beginner in physics

HyperPhysics
Educational website covering many topics in physics and math

Encyclopedia Astronautica
History of spaceflight

MacTutor History of Mathematics archive

Story of Mathematics
Mathematical history and biographies

NASA Image, Video and Audio Library

HubbleSite
Run by the Space Telescope Science Institute's Office of Public Outreach

Earth and Climate

Global warming from 1950 to 2013

The Encyclopedia of Earth
Expert-reviewed content

USGS Mapview
Map-based search for downloading geologic maps, help is available as a link on the main page

Colorado Geological Survey
Resources for avalanche information, Colorado geology, energy resources, geologic mapping and more

National Weather Service
Data source for many weather sites, search by city or zip code for current conditions and short- and long-term forecasts

Weather Underground
Check out the Wundermap and historical data

WeatherSpark
Breakdown of average weather for locations around the world

NASA Climate page
Detailed overview of our changing climate

NASA's Global Change Master Directory
Extensive earth science data sets services for global change research (Help)

NOAA: National Oceanic and Atmospheric Administration
Resources to locate climate and weather data

NOAA: Paleoclimatology data
Climate change over geological history

U.N. Environment Programme Network focus on climate change
International efforts to mitigate global warming

Center for Climate and Energy Solutions
Works with diverse partnerships to meet climate and energy challenges, offers various facts and figures, reports and initiatives

Union of Concerned Scientists: Global Warming

Climate Action Tracker
Tracks the efforts of countries to reduce greenhouse gas emissions

Biology and Natural History

Biology Online: Life Science Reference
Answers to your Biology questions

Food and Human Nutrition: USDA National Agricultural Library

Encyclopedia of Life
Research all known species

All About Birds
From the Cornell Laboratory of Ornithology

Avibase: the World's Bird Database
Extensive database of birds of the world

The TalkOrigins Archive
Scientific perspective on creationist claims

Denver Museum of Nature and Science
Visit the website of our city's esteemed museum

American Museum of Natural History

University of California Museum of Paleontology
Fossils, news, online exhibits, more

Technology

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HowStuffWorks

How Products are Made
Explanations of how many products are manufactured, includes a section of inventor biographies