Annenberg Learner: Two Different Kinds of Volcanoes

It's not often that you come across a clever laboratory activity that is both imaginative and comprehensive! Using M&M's and Reese's peanut butter candies to represent two different clam species, young biologists test for "relative...

Two different groups of scientists published scientific papers in 1980 offering proof of a large asteroid hitting Earth between the Cretaceous and Tertiary layers of ground. Scholars use a worksheet to analyze the same type of data as...

Are you nuts? An engaging experiment burns nuts to find their kilocalories. Young chemists analyze at least two different types of nuts with their experimental results versus what is on the package. The resource offers a great lab...

Two activities employ the use of kinematic equations for determining projectile ranges. They both require the use of a toy dart gun. Included in this resource are both the teacher's guide and student laboratory sheets. This is an...

How is it that the same animal, living in the same place, at the same time, evolved into two different species? As part of a larger series, an engaging video explains the rise of the chalicothere, the split in evolution, and eventually...

What creatures lurk in the rainforest at night? Meet three of them in one short video. Part of a playlist exploring mammals, the video presents a look at night research in the Amazon. Scientists locate and photograph two bat species and...

All mammals have warm blood, are vertebrates, breathe with their lungs, have hair or fur on their bodies, and produce milk for their young. But not all mammals give birth to their young in the same manner. Watch a video that explains how...

In 1952, a mysterious fog killed an estimated 4,000 people in London, raising awareness of the relationship between air quality and public health. An interesting video explains two different types of smog, describing the conditions...

Young scholars discover that proteins that are the product of DNA translation are different for different species. They determine that by analyzing their mass and charge they can differentiate between two different species. They use some...

More than 144 sub-types of influenza A exist today. How is that possible? Scholars view an animation of a cell being attacked by two different strains of the flu. Then the strains mix, creating an entirely new third strain. The idea of...