Return to Research
Physical Sciences and Mathematics
General Science
Scholarpedia
Peer-reviewed open-access encyclopedia, where knowledge is curated by communities of experts
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
National Science Digital Library
Online educational resources for teaching and learning, with an emphasis on science, technology, engineering, and mathematics (STEM) 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
Story of Mathematics
Mathematical history and biographies
NASA Image and Video Library
Discover NASA's intergalactic multimedia collections--images, videos, and audio. NASA en español
Hubble Space Telescope
Latest news; science and cultural impacts; spectacular multimedia library; education resources including online activities, fact sheets. What did Hubble see on your birthday?
Webb Space Telescope
Explore the universe with Webb--latest news, science, multimedia, fact sheets. En español
Earth and Climate
The Encyclopedia of Earth
Expert-reviewed content
U.S. Geological Survey MapView
Map-based search for downloading geologic maps, help is available as a link on the main page
See an example Gold Hill, Boulder County, CO
Colorado Geological Survey
Resources for avalanche information and other geologic hazards, 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
Detailed overview of our changing climate--vital signs dashboard, data resources, images of change. En español
NOAA: National Oceanic and Atmospheric Administration
Guide to locating climate and weather information/data
NOAA: Paleoclimatology Data
Climate data through geological history, from natural sources such as tree rings, ice cores, corals, stalagmites, and ocean and lake sediments.
U.N. Environment Programme Network
International efforts to mitigate root causes of the triple planetary crisis: climate change; nature, land and biodiversity loss; pollution and waste.
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
USDA National Agricultural Library
Resources for animal health and welfare; agricultural economics and trade; farming and agricultural production systems; human nutrition and food safety; rural communities; gardening. Search PubAg to find full-text articles and citations to peer-reviewed journal articles in the agricultural sciences.
All About Birds
From the Cornell Laboratory of Ornithology
Avibase: the World's Bird Database
Extensive database of birds of the world. En español
Denver Museum of Nature and Science
Exhibits, films, other programs and events, including virtual classroom and teacher professional development programs.
American Museum of Natural History
University of California Museum of Paleontology
Fossils, news, online exhibits, more
Technology
How Products are Made
Explanations of how many products are manufactured, includes a section of inventor biographies