Biology

Grow bacteria cultures safely at home
Preserve biological specimens of all types
Discover how plants grow in low gravity
Extract and purify DNA in your kitchen
Run computer programs that simulate living systems
Study the effect of ultrasonics on plant growth
Cultivate slime molds
Photograph an ant's brain and nervous system
Rear a plankton menagerie
Test the color vision of pigeons
Grow animal tissue cultures
Spy on fledglings in their nest
Build a working electrocardiogram to monitor your own heartbeat
Study the metabolism of small animals, even individual insects!
Collect and preserve spider webs
Keep reptiles alive and healthy
Record bird songs
Record your own heart's electrical signals with a homemade EKG
Cultivate wild species of algae and use them as experimental organisms
Convert an old kitchen blender into a working centrifuge

Plus over one hundred other biology projects!

Chemistry

Build a spectrograph to determine the chemical structure of materials
Demonstrate the basic principles of enzyme action
Make your own electrochemical cell
Experiment with films only one molecule thick
Use a hot wire to study the crystal structure of steel
Investigate the chemistry of Béarnaise sauce
Detect metals in air, liquids, or solids
Construct equipment to study the formation of crystals
Measure the strength of chemical bonds
Synthesize organic molecules
Learn the secrets of distillation
Build a gas chromatograph for analyzing substances
Reach extremely high temperatures safely in a coffee thermos.
Build a sensitive balance that can measure 10 millionths of one gram.
Identify almost any chemical using a hot stage microscope
Build a simple spectrophotometer for under $100
Study how liquids freeze
Observe crystals as they grow
Use electricity to separate complex concoctions of chemicals
Blow your own laboratory glassware
Generate free radicals and collect them for analysis

Plus over one hundred other chemistry projects!

Earth Science

Build a seismograph to study earthquakes
Build a hydrophone and record underwater sounds
Measure the electric charge on raindrops
Monitor atmospheric haze
Discover rainfall patterns in a storm
Study fluctuations in the earth's magnetic field
Simulate the process of stream and river erosion
Build a video microscope for about $10
Preserve snowflakes in plastic
Build a pendulum that detects the earth's rotation
Identify minerals found in clay
Record storms in the earth's ionosphere
Rear a plankton menagerie
Detect atmospheric ions
Monitor tiny shifts in the earth's electric field
Build an observatory to track changes in the earth magnetic field
Study the earth's strange natural radio signals
Monitor stratospheric haze from distant volcanic eruptions
Observe subtle tsunamis that flow around the earth's atmosphere
Build a water-based barometer

Plus over one hundred other earth science projects!

Astronomy

Learn all the secrets of grinding and testing telescope mirrors
Build, mount and use research-quality telescopes at home
Search for titanic galactic explosions
Study variable stars like a pro.
How to properly measure, record and report a comet
Directly observe the moon's gravity on earth
Determine the Gravitational Constant
De-tinkle starlight
Directly observe solar flares
Safely monitor sunspots
Become a super selenologist (an expert lunar observer)
Build a "cold camera" to take spectacular images of the deep space.
Construct an expensive hand "guider" to track stars
Build the world's coolest solar projector
Explore planetary nebulae
Monitor ultraviolet radiation from the sun
Simple ways to calculate the orbits of space vehicles
Build an ultraviolet spectrograph
Build a sundial that keeps clock time
Locate yourself anywhere on earth with a nail, a length of string and a stopwatch.

Plus over one hundred other astronomy projects!

Physics

Build an atom-smasher in your basement—really!
Learn six different ways to fabricate a laser at home
Make soap bubbles that last for months (or even years!)
Build a hyper-accurate thermometer and ultra-precise temperature standards
Study the physics of amusement park rides
Racquetball whistlers and other strange experiments with sound
Create a laser hologram
Investigate vortexes in water
Measure the energy drain on your car
Build an apparatus for studying chaotic systems
Use magnets to make fluids into solids
Kick butt through the physics of martial arts
Build an electrostatic machine that safely generates 500,000 volts!
Study the dynamics of cracks in a surface
Capture cosmic rays from outer space
Simulate gravitational fields with droplets of water on a soap bubble
Build a working Stirling engine
Learn four different ways to detective radioactivity at home.
Measure the charge of a single electron
Study turbulence in two dimensions

Plus over one hundred other physics projects!

Monitor the health of local streams
Use a kite as an experimental platform
Build an underwater observatory
Construct a device that draws beautiful "harmonograms"
Simulate the geology of beaches with a wave machine
Fabricate and maintain a saltwater aquarium
Build an osmotic pump
Study the flight efficiency of soaring birds
Raise butterflies as experimental animals
Create a ripple tank to study wave phenomena
Fashion a wind tunnel to study aerodynamics
Detect micro-shifts in microclimates
Turn a nearby lake or pond into your personal research laboratory
Built a floating ocean buoy to record the ocean's environment
Monitor the migration of Monarch butterflies
Participate in national observing projects to study birds
Build a sonar detector
Map to preserve a watershed
Study the biodiversity in your own backyard
Cultivate microbes collected from the soil

Plus over one hundred other ecology projects!