Evidence suggests that Pluto has undergone polar wander. A video instructor explains how Pluto's axis of rotation may have changed and how this is possible. The lesson focuses on the science behind the discovery and what it tells...

From the top of the food chain to extinction, follow the life of the megalodon! An episode in the PBS Eon series describes the evolution of the ancient species and its eventual extinction. The narrator discusses the fossil evidence and...

Would you believe the Midwest region of the United States was once the Western Interior Seaway? An interesting presentation from the PBS Eons series describes the geography of the ancient seaway and the species that lived there. The...

Discover the versatility of the sloth species—at least what it once was! Scholars examine the history of the evolution of the sloth in a segment of the PBS Eons series. They learn that the current-day view of the sloth is one of a...

Your family get-togethers are about to become more interesting! A video lesson in the PBS Eons series describes the primate family tree that leads to the one and only—homo sapiens. Discover the fossil evidence that leads scientists to...

Take an evolutionary journey as an ancient amphibian. A lesson from a PBS series describes the features and evolutionary sequence of a large amphibian group, the Temnospondyls. Although extinct over 210 million years ago, many...

Just how long can a fossil preserve DNA? It seems that DNA becomes unreadable after about 6.8 million years. Learn about the science that helped make this conclusion and the mistakes made along the way in a lesson from a PBS Eons video...

Marie Curie overcame limitations to become the first person to win two Nobel Prizes. A video presentation outlines her work and discoveries in radioactivity. The narrator gives a timeline of her achievements as she sacrificed her...

Have you ever wanted to visit the sun? While that's not an option given the temperatures involved, use a SciShow Space video to learn about the probe headed to the sun to help people understand a few things that confuse scientists. The...

Scientists discovered a hole in the ozone layer in 1980, and by 2000, the hole was three times the size of the United States. Through global efforts, scientists discovered the cause and worked together to get countries to implement a...

Scientists proved Einstein wrong and in the process also proved him right. Scholars learn about two recent scientific discoveries in an interesting SciShow Space video. The first describes the possibility of life on Mars based on recent...

Most research about life on Mars actually happens on Earth. An installment of the SciShow Space series introduces young scientists to the process of learning about one planet by studying our own. They observe photos of the similar...

A double helix looks similar to a curled zipper. Viewers see transcription, which appears similar to unzipping the DNA. The basic level of detail works well as an introduction to transcription, RNA, and proteins.

Slow motion effects add a dramatic influence to a lesson on atmospheric pressure. A video presentation explores characteristics of atmospheric pressure through experimentation. A large imploding drum demonstrates the effects of air...

Cells only divide a specific number of times before they die at the end of the division cycle. This molecular clock is the culprit of aging. A video explores the concept with a trip to New York to discuss the phenomenon with a leading...

The simple question What time is it? may not be so simple after all. Learn about the history of measuring time and the debate on if time even exists with a short video that considers both classical physics and quantum physics when...

Discover the statistics war. The 42nd video in the Crash Course Statistics series introduces how statistics have proven valuable during wartime. The resource covers the use of statistics in breaking the German code, finding U-boats, and...

Innocence hangs by a probability. An intriguing video discusses how statistics affect daily life, specifically in the courts. Looking at three court cases spanning several hundreds of years, the resource recounts how errors in statistics...

Finding the midpoint is as simple as finding the middle. Given a graph of a segment, a video tutorial demonstrates how to find the midpoint. The instructor uses the midpoint formula and then reinforces the calculations with the graph.

With better technology comes better information. An interesting video presentation discusses the evidence that makes scientists believe black holes exist in our galaxy. The narrator explains what a black hole is and how one forms.

How many hours should be in a day? One species of drosophila naturally prefers a 24.5 hour day, while another strongly prefers a 19-hour day. An animation and graph share data from each of these species when exposed to the typical light...

Precision is imperative in science! Learn how science defines units of measure and how that changed for several units in 2018. A video lesson describes the history behind the definition of the kilogram, and the narrator then...

Scientists have been studying the surface of Mars for many years ... it's time to know a little something about its interior, too. The Mars Insight launched in November 2018 on a mission to study the happenings inside the most studied...

Our planetary neighbor has some explaining to do! Scientists are mystified by the fact that Venus spins in the reverse direction of all other planets. A thoughtful video lesson explains different hypotheses as well as the science leading...