Science Friday® is produced by the Science Friday Initiative, a 501(c)(3) nonprofit organization.
How many licks does it take to get to the center of a Tootsie Pop? Navigate the perils of licker variation by designing your own lollipop-licking experiment.
In this activity, you’ll monitor the position of a houseplant to find out whether or not it changes position in response to a change in sunlight.
Can you engineer a jet propulsion system that mimics the speed of a squid?
Learn about the insect origins of silk by dissecting a cocoon and “degumming” it to reveal the protein that scientists use for constructing new materials.
Why does the length and direction of our shadow change throughout the day? It all comes back to rotation and position of our planet relative to the sun.
What does the Sun do? Tell us, using the hashtag#ExplainTheSun
Learn from experienced educators how to teach evolution in communities where evolution is controversial and browse classroom evolution resources.
For this science club, we want you to explain something to us, something BIG…
Have scientists always agreed on the impacts of climate change? Act like an investigative reporter by sifting through expert interviews and reports on extreme weather and climate change.
Students at Frederick Douglass Academy in New York City use flight simulators as part of an aeronautics class, with some kids eventually logging flight time in real planes.
Test which building materials will be resistant to mold after a flood or hurricane.
Create small turtle navigators and use them to detect magnetic fields in this activity and companion game.
Use a measuring cup to figure out the density of snow.
Students hear how 21st century tech has changed exploration, then decide for themselves: "What one piece of technology would you take on your own expedition?"
Build and test a water filter inspired by marine filter feeding organisms.
Our best home experiments and maker projects from 2014.
A home holiday experiment that explores combustion using festive fuels such as fir, pine, spruce, and cedar.
Gather evidence from interviews with scientists about comets, then create a wordy illustration of comet characteristics.
Simulate a sneeze with paint, then graphically determine where most of it lands.
Brookhaven National Laboratory provides a glimpse into the culture of the U.S. Department of Energy's summer undergraduate laboratory internship program.
A class keeps tabs on fruit decomposition, someone spies mystery in a lake, and a hiker sits down with an ant.
Can you match each jumping spider dance to its vibratory song?
In this experiment, you will test a few common household ingredients to see which is the most effective emulsifier for making salad dressing—and you can eat your results!
Map the spread of tick and mosquito-borne illnesses in the United States using real data.
Add some pizzazz to your favorite clothing and accessories using some wire, tape, a battery, and an LED.
Learn to speak the language of fireflies and invent your own secret flash code.
Watch footage of a live octopus to model different ways that these animals can camouflage themselves by changing their body’s texture, shape, size, and color.
Act like an experimental chocolatier and determine how different melting and cooling procedures impact the shine, hardness, and texture of finished chocolate.
Student video competitions engage the minds of future science communicators.
Experiment with the relationship between boiling point and the Leidenfrost effect using different aqueous solutions, a metal pan, and a little baby powder.
An international robotics competition challenges high schoolers to fund, design, and build an intelligent, semi-autonomous robot.
Create a model eardrum to visualize sound vibrations, and then use a smartphone to identify your model’s natural frequencies.
Safely find, build, or hack a machine that makes any kind of art.
Teenage girls learn computational design in a collaborative weeklong workshop at the New York Hall of Science.
Learn how insects have inspired engineers to make a robot that walks on the surface of water. Design your own water-walking critter using thin wire, and test its effectiveness: how many paperclips can it hold up using surface tension?
Watch an interview with a couple who built a home from shipping containers. Then, design and construct a scale model of a unique shipping container home using printed templates, and estimate the cost of flooring and paint based on model dimensions.
Use the physical characteristics of ice to determine where and how several mystery samples could have been frozen.
Perform an experiment to determine whether smooth or wrinkled fingers are better at holding wet objects. The experiment requires only a water bottle, paperclip, and plastic ruler. Downloads: Video, student data sheet, illustrated instructions
Explore color by creating color-filtering glasses using paper and tinted cellophane.