Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

This science fair project idea explores whether dry ice will cool a beverage faster than wet ice.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

Use this great no-bake recipe to save energy and keep cool.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Invite your second grader to help you measure and mix these fresh, cool concoctions!

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

Explore how you can achieve magnetic levitation with the Meissner Effect! This cool science project explains formation and applications of a superconductor.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

Kids make strong bubbles to investigate the effect different additives have on bubble life in this cool science fair project idea.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

Practice conversions within the metric system in this fun math card game for third graders.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

This project explores what happens to a rubber band when it is heated and cooled.