This science fair project idea determines which flower lasts the longest.

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This science fair project studies which color(s) of flowers butterflies & bees are attracted to and if color plays a role in flower selection for pollination.

This science fair project idea explores whether color affects a person's emotional state.

This science fair project idea explores whether there is a connection to the color a person wears and the way their emotional state is perceived by others.

Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Test ability to distinguish between natural and artificial aromatherapy oils. Select fragrance, natural and synthetic sample. Volunteers state preference.

Fibonacci sequences have been observed throughout nature, like in leaves and flowers. In this project, students find examples of the Fibonacci sequence.

The objective of this experiment is to evaluate the effects of acid rain on plants.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.

This social science experiment endeavors to determine whether certain types of animals provide greater physical and mental health benefits to their owners.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

This science fair project compares the allelopathic chemical produced by the Black Walnut tree to a commercial herbicide in stopping the growth of a shrub.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

Science fair project that studies how perfumes are made in order to determine how we can capture a scent.

The objective of this experiment is to conduct a ganzfeld experiment and determine if extrasensory perception (ESP) can be observed.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.

Learn about the anatomy of the autonomic nervous system and its relationship to the rest of the body.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

This science project is to discover which Black Walnut tree tissue contains the most concentrated amount of Juglone, a substance that works like an herbicide.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

This project examines how temperature affects the volume of gas in balloons.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.