Ratio (noun, “RAY-shee-oh”) A ratio is a way to compare two numbers. Imagine you are baking cookies. The recipe calls for 1 cup of sugar and 2 cups of flour.…

A deadly fungus has been wiping out amphibians around the globe. But some frogs that have developed resistance to the disease are helping their species bounce back. Mountain yellow-legged frogs…

The sun’s light and warmth make life possible on Earth. But these same qualities also make the sun a tempting target for fictional supervillains. If an evildoer could control the…

Food poisoning isn’t something we easily forget. Scientists have now homed in on what makes it so unforgettable. Alarm cells lock the experience into our brain’s circuitry as a yucky memory.…

Consider this hypothetical scenario: 8-year-old Sam is texting with his mom, Anna. Anna apologizes for missing his concert last week. But Anna isn’t away on a trip. In fact, she…

Ecosystem (noun, “EE-koh-sis-tem”) An ecosystem is a network of living and nonliving things interacting in the same place. The living things in an ecosystem could include animals, plants and microbes.…

One ancient type of wasp appears to have had an especially freaky way to trap prey 99 million years ago. It used a mouth-like structure on its backside, fossils now…

When rain or snow falls, much of it seeps into the soil. From there it flows down through porous rock, gravel and sand, forming underground streams. This groundwater will sometimes…

Chaco Canyon was once the heart of a lost civilization. People began building grand structures there around A.D. 850, in what is now northwest New Mexico. Within 300 years or…