This site looks at the science behind food and cooking. Learn about what happens when you eat sugar, bake bread, cook an egg, or pickle foods. Find out how muscle turns to meat, what makes meat tender, and what gives meat its flavor. Take tours of breads and spices of the world. Explore your sense of taste and smell.

This features scientists and machines that explore the universe's tiniest particles. Follow a proton through the accelerator. Meet scientists at CERN. Hear why they search for the secrets of matter. Learn about the antimatter, the Big Bang, and other big ideas behind experiments at CERN.

This site features dozens of online learning activities and exhibits. Make a mold terrarium, pinhole projector, telescope, or hair hygrometer. Explore the brain, biodiversity, Antarctica, DNA, frogs, structures, or illusions. Learn about magnetism, electricity, motors, eyeballs, perception, Mars, chocolate, seasonings, or the science of cooking, sports, and music. Search over 3,000 photos and movies. Watch webcasts of science demonstrations by teachers.

This site offers a window into the world of scientific research on climate change. Learn about physical processes underlying the earth's climate, data on how the climate is changing and the role of human activity, and questions and uncertainties that researchers continue to explore. The site is organized in four parts: the atmosphere, hydrosphere (oceans and water), cryosphere (snow and ice), and biosphere (living organisms).

This is a short activity for growing the slime mold Physarum polycephalum. It includes materials needed, a three-step procedure, and helpful tips. The site is part of the Turbulent Landscapes exhibit at the Exploratorium. Links to other activities and features of the exhibit are also included.

This site looks at the people, tools, ideas, and places of the Hubble Space Telescope. See how scientists on earth talk to the telescope in space. Dissect Hubble's images and see what they tell us about the universe. Take a tour of Hubble, from the telescope to the control rooms.

This site dissects a sheep brain to show us the anatomy of memory. See works of an artist who paints entirely from memory. (Compare his paintings to photos of places.) Play interactive games that test your memory -- learn ways to improve it. Discover why some things are easier to remember than others (droodles game). Which facial features help us remember a face? Which image of the penny is correct? Try a mnemonic device called elaborative encoding.

This site shows what blood is, what happens when the immune system goes awry, what are stem cells are, and more. See videos exploring cell structure and function, cell development and motility, plankton, plants, and protozoa. Learn how the sea urchin helps us understand genes, reproduction, and cancer.

Lets us look over the shoulders of scientists and glimpse the often-unseen moments of investigation. Take virtual field trips to eight observatories -- Arecibo, where astrobiologists search for signs of life beyond the solar system; Las Cuevas, a research station in Central America's largest remaining rainforest; and others. See interviews, photos, and broadcasts that explore the origins of matter, the universe, and life itself.

This site invites children of all ages to explore the science of music through movies, questions, and online exhibits. Compose, mix, and play with music in ways you probably haven't before. Find out what makes sad music sad, why some songs get stuck in your head, and how opera singers are able to sing notes that seem to last forever.

This site explains what to look for during a solar eclipse, how to create a pinhole projector (for safely viewing an eclipse), why eclipses happen, a world map of future eclipses, and archives of webcasts of past eclipses in Greece (2004), the U.S. (2002), and more.

looks at how the sun creates a changing set of conditions in space. Learn about coronal holes, solar flares, coronal mass ejections, solar wind, magnetosphere, and auroras. See photos, graphs, and live data. Make your own space weather predictions.