Here is a simple step-by-step explanation of how the human eye works, including a diagram of the parts of the eye.
Biology
Explore the difference between a butterfly and a moth. Learn how to tell them apart and see exceptions to the rules that distinguish them.
What Is the Difference Between a Butterfly and a Moth?
Iridescent plants are different colors, depending on the viewing angle. While you may be unfamiliar with iridescence in plants, you’ve seen it in soap bubbles, peacock feathers, CDs, and butterfly wings. Iridescence results from diffraction or when two or more semi-transparent surfaces reflect light and produce an interference pattern. Both […]
Iridescent Plants for Your Home and Garden
Shark teeth are black because they absorb color from minerals during fossilization.
Why Are Shark Teeth Black?
The coronavirus responsible for the disease COVID-19 has spread from China to 75 countries worldwide. Harvard epidemiologist Marc Lipsitch estimates between 40% and 70% of the world population will be infected with coronavirus sometime this year. So, chances are good you or someone you know will catch coronavirus. How will […]
How to Know If You’re Infected With Coronavirus: Coronavirus Symptoms
Termites are social insects that eat wood and other plant matter. Completely by accident, people discovered termites follow ink trails made by the black or blue ink from Bic and Papermate ballpoint pens. While they will follow a path made by other pens (85% of black ballpoints and 80% of […]