Flowering Phenology: How Do Plants Know When To Flower?

How do viruses know which cell to infect? Using a fun role-play activity, pupils act as viruses and cells and get up and move to find their cellular match to demonstrate how viruses recognize a target cell. Learners understand the...

Imagine describing what something looks like when you've only seen it from the inside. That's the task astronomers tackle when describing the shape and characteristics of the Milky Way. Using a combination of physics and mathematics,...

Participate in a little chemistry Q and A! Part of a larger series on reactions, an informative lesson takes questions from viewers and crafts responses. The video explains how we arrive at an accurate half-life of a radioactive...

Continents are on the move! An engaging lesson explains the acceptance of the idea of continental drift. The narrator of the It's Okay to Be Smart "Earth Science Videos!" installment considers the convincing evidence of the concept. 

Without water, mosses dry out and stop photosynthesizing, essentially dying. However, with the first drop of rain, even after 100 years, they instantly come to life and grow. The video explains the benefits of this behavior and what...

Students study the process of plant reproduction and the biotic and abiotic factors that affect flowering phenology. In this plant reproduction lesson, students describe the interaction of environmental factors as it relates to...

How do scientists know what they do about evolution? Looking at fossilized data, paleontologists examine fossils to show the evolution and changes that developed into modern whales. We find out that scientists use physical evidence,...

It seems like a simple process: we breathe in, our nose detects different scents, and our brain interprets the smell. But how does it actually work? How can something smell like vanilla to one person, but like urine to someone else? How...

Injection, taking a pill, or inhaling are the three main ways to administer a drug. But how do these drugs affect the brain? Watch a video that explains how neurons use neurotransmitters to communicate to one another in the brain.

We know plants assist in the water cycle, but how do plants get water from the ground into the air? Through a series of demonstrations or labs, scholars observe the movement of water through plants. They microscopically view the cells...