It's a hard world out there, especially for a little guy. So what's a soft-bodied animal to do? Turns out that marine invertebrates basically figured out the best defense system of all time, and nobody's a better demonstration of that...

Paul Andersen explains how biology is ordered in the hierarchy of life. He first of all describes how emergent properties appear as you move to more inclusive systems. The then describes life at the following levels; atom, molecule,...

Animals eating other animals seems like a tale as old as time, but it's only almost that old. Predation had to evolve in the Ediacaran period -- so let's look at early almost-predators like Auroralumina, Kimberella, Ikaria, and whatever...

Right at the beginning of the Paleozoic, there was a huge explosion of more complex life. And that’s when things started to get really interesting. This is our second installment on the history of life, but you can watch in any order you...

Hank introduces us to ecology - the study of the rules of engagement for all of us earthlings - which seeks to explain why the world looks and acts the way it does. The world is crammed with things, both animate and not, that have been...

Vultures, you eat old, putrid dead things for a living. How is that not killing you? Hank explains the secret weapons vultures use to fight off disease, avoid predators, and beat the heat. Prepare for a Sci-Show Gross-Out!

Paul Andersen explains how biology is ordered in the hierarchy of life. He first of all describes how emergent properties appear as you move to more inclusive systems. The then describes life at the following levels; atom, molecule,...

Hank gets to the more violent part of community ecology by describing predation and the many ways prey organisms have developed to avoid it.

Last time we put a Polar Bear in the desert and we still feel bad about that, but there's a lot more going on in ecosystems than just temperature. In fact, there are so many elements in ecosystems, that if just one leaves or gets out of...

Symbiosis is a close and evolved interaction between species, which can be obligate (necessary for survival) or facultative (optional). It includes various types: mutualism (both benefit), commensalism (one benefits, the other is...

Journey to the east coast of Africa as dolphins, sharks, whales and birds converge to feast on migrating sardines, the greatest shoal on Earth. Biology - Ecosystems - Learning Points. From May to July, millions of sardines migrate to...

The creation, controversy and competition surrounding the publication of Darwin's most iconic work: The Origin of Species. Biology - Adaptation And Evolution - Learning Points. Darwin, an English scientist, worked on his theory of...

From the western gorilla to the blue whale, thousands of animal species are under various levels of threat. What can we do to protect them or is it already too late? Biology - Adaptation And Evolution - Learning Points. An astounding...

An important part of any ecosystem are the biotic (living) and abiotic (non-living) factors. This video explore what each of them are, and how to identify them. To learn more about ecosystems in general check out our other video on...

Moving on from organisms and populations, the next tier on the scales of ecology is communities. These involve all the populations of organisms of different species that live in an area. How do they interact? How is the community...

This week on Nature League, Adrian asks Brit if a full moon has any measurable effect on humans and non-human animals.

The video is a lecture presentation on fish farming. It discusses why fish is a good source of protein and nutrients for humans and other animals, as well as how fish farming helps conserve wild fish stocks. The video also talks about...

This clip examines Bighorn sheep die-offs and one of the reasons their numbers aren't bouncing back as they usually do: growing predator populations. Filmed over a two year period in the rare grasslands of the Chilcotin in British Columbia.

This video explores the fascinating world of wildebeests on the Great Plains of Africa. It highlights their unique behaviors, social structures, and incredible annual migration, showcasing how these herbivores adapt and survive in...

Life on the rocky and sandy shore of the ocean coast. How the marine coast supports life on land and sea. Threats to the ocean and how to help.

This video provides an informative overview of turtles, highlighting their distinct characteristics, diverse species, and unique adaptations. It explores their evolution, habitats, physical features, reproductive behaviors, and lifespan....

This video provides a glimpse into the world of elephants, highlighting their vulnerability to predation, the threats they face from human intervention and illegal poaching, as well as their historical significance and the...

This video explores the fascinating world of crocodilians, highlighting their diverse habitats, behaviors, and reproductive strategies. From mud-wallowing to ocean swimming, these creatures have adapted to thrive in various environments....

Explain the different types of intraspecific and interspecific interactions among organisms with examples.