Why Don't Whales Have Legs?

Can you go ice fishing in the ocean? Learners examine the freezing point of different saltwater solutions. Each solution has a different concentration of salt. By comparing the freezing points graphically, they make conclusions about...

Ants head out in the morning to collect food and all return at the end of the day, yet they don't have traffic jams. An intriguing resource compares ant travel patterns to human travel patterns as part of a biology playlist. It discusses...

Why does the moon stay put, never getting too close or too far from Earth? See the truth unfold through interviews and a simulation using a basketball and a tennis ball. The host helps guide the discussion, all while spinning a ball to...

Sharing just makes you feel good ... especially if you're a non-metal! Young chemists examine bonding basics with a video from JFR Science. Topics include how covalent bonding differs from ionic bonding, how covalent bonding works, and...

Mexico, Brazil, and Australia include the highest numbers of venomous species. An engaging video takes on the idea that venomous animals live in warm climates as part of a larger science series. It discusses possible reasons why this is...

Now that's sour! Did you know lemons contain more sugar than strawberries? Here is a resource that helps pupils explore sugar, where it comes from, different types, why organisms need it, and how much we ingest. 

Is it true that larger animals have longer lifespans than smaller animals? Does an animal's habitat help shape the length of its life? And does the ability to adapt and evolve allow living things to expand their lifespans? Watch a video...

It turns out that some laws were definitely not meant to be broken! A short illustrative video explains why the first and second laws of thermodynamics prevent perpetual motion machines from actually moving perpetually — and why...

Although little is know about why whales sing, researchers are developing theories that explain how whales are able to vocalize. Viewers get a short course in whale song and even get to listen to recordings of the haunting melodies...

With leaves as their main source of diet, sloths don't particularly gain a lot of energy when they eat. But how do they maintain such slow lives? Watch a video that explains why sloths are so slow.