Ask an Artificial Intelligence Expert
From MIT.

Ask an Astronaut
From the Astronomy and Space Science Group at George Mason University.

Ask an Astronomer

Ask an Astronomer
e-mail: starman@unc.edu
From the Education Coordinator of Morehead Planetarium, University of North Carolina at Chapel Hill, will answer your questions about stars, planets, comets, astronauts, and the like.

Ask the Astronomer/Space Scientist
Dr. Sten Odenwald has a Ph.D. in astronomy from Harvard. Check out his extensive and fascinating archive of previously answered questions. If you have an original question, submit it here.

Ask a Biomass Expert
e-mail: d.batstone@cat.csiro.au

Ask the Bot and Intelligent Agent Expert
e-mail: zillman@bottechnology.com
Bots are software tools designed to dig through data. You give a bot directions, and it brings back answers. Related subjects are Web search engines and artificial intelligence.

Ask the Brain Man about Neuroscience
A neuroscience researcher at the University of Western Australia.

Ask the Cameraman
James Paterson is a professional tv camera operator and editor with many years experience in the areas of television and video production. He is available to answer your questions about any area of domestic or professional videography.

Ask a CO2 Car Racing Expert
Mr. C will answer your questions about designing, building and racing CO2-powered cars.

Ask a Communication Technology Expert
For e-mail, voicemail, videoconferencing, and related questions.

Ask a Computer Technology Expert
General computer questions and Y2K issues.

Ask the Department of Agriculture

Ask an Earth Scientist
A service of the Dept. of Geology and Geophysics, University of Hawaii.

Ask an Earthquake Expert

Ask an Energy Expert

Ask an Engineer
From the Society of Women Engineers.

Ask an Exercise Scientist

Ask an Extragalactic Distance Scale Expert

Ask the "Faster Than Light" Physicist
Real science or sci-fi? New research demonstrates that traveling at warp speed may be a reachable reality for the new millennium.

Ask the Food Scientist
This Food Scientist has knowledge about E. coli, hepatitis, and genetically modified foods.

Ask the Forensic Science Expert
Andrea Campbell, author of Forensic Science: Evidence, Clues and Investigation, is answering questions on fingerprinting, DNA profiling, ballistics, and other crime solving techniques.

Ask the Forester
Ask the Science and Education Department of the Society of American Foresters about trees, forests, and the people who grow and study them.

Ask a Geochemist

Ask a Geologist
Do you have a question about volcanoes, earthquakes, mountains, rocks, maps, ground water, lakes, or rivers? From the U.S. Geological Survey.

Ask a Geologist
From the Geological Survey of Canada and other Canadian organizations.

Ask a Geologist
For Canada residents.

Ask a GIS Expert
National Wetlands Inventory from the United States Department of the Interior Fish and Wildlife Service.

Ask the "How Stuff Works" Expert
Marshall Brain can explain how almost anything works! Due to overwhelming popularity, not all questions can be answered.

Ask the Interactive Web Science Instructor
Specializing in how to "mine" the Internet for help in developing exciting interactive science lessons.

Ask a Mad Scientist
A collective crania of scientists From around the world. Free registration.

Ask a Microbiologist
Dr. Martin Cockcroft of the Stockton Quality Control Laboratory

Ask the Microgravity Scientist

Ask the NASA Mars Team

Ask the Neuropsychologist
Mitchel A. Woltersdorf Ph.D. of the Midwest Brain Function Clinic.

Ask the Organic Chemistry Expert
Artem G. Evdokimov  received his PhD in structural biology and organic chemistry at Weizmann Institute of Science in Israel.

Ask a Plastics Expert
Mark Lees will answeryour question about polymers and materials, plastics manufacturing processes, plastics processing machinery, and most other questions relating to plastics.

Ask a Photovoltaic Design Expert
From the Photovoltaic Design Assistance Center at Sandia National Laboratories in Albuquerque, New Mexico. For technical requests on problems as well as industry information on photovoltaic systems, small wind power systems, and solar thermal systems.

Ask the Physical Scientist for Kids
Dr. Kain is an expert in the areas of science education, science activities and science on the Web.

Ask a Plant Expert

Ask a Plant and Pest Expert
From the Plant and Pest Diagnostic Laboratory at Purdue University.

Ask a Pollution Expert

Ask a Plasma Physicist

Ask a Pyrotechnics Expert
This Russian scientist is an expert on fireworks.

Ask the Science Cafe
Priority is given to U.K. school questions, but you can search their vast database of previously answered questions.

Ask a Science Expert
From Sheffield Hallam University.

Ask a Science Expert
From The Franklin Institute Science Museum.

Ask the Structural Biologist
Artem G. Evdokimov  received his PhD in structural biology and organic chemistry at Weizmann Institute of Science in Israel.

Ask the Solar Car Experts
Dr. Lehman Marks is the Director of Winston Solar Education Program, the Director of the Winston Solar Challenge
(only high school solar car race in the world); and the sponsor of the Winston Solar Car Team. Dr. Marks and his team will answer your solar car questions.

Ask the Sun Expert

Ask About Telecommunications
Answering questions about bandwidth, IP telephony, and videoconferencing, and more.

Ask the Terrarium Guru
Ron Gladkowski of Terrariums by Ron is an artist who builds beautiful stained glass terrariums and is also an avid gardener.

Ask a Volcano Expert