Join the Amoeba Sisters as they introduce the basics about cladograms and phylogenetic trees. The Amoeba Sisters walk through the process of building a basic cladogram and mention vocabulary such as: shared ancestral character, shared...

Natural selection can lead to some pretty amazing adaptations, but sometimes the resulting traits aren’t the most efficient solutions to the problems at hand. With the bar set to “good enough,” here are some features that arose from...

Tyrannosaurus rex was big, Tyrannosaurus rex was vicious, and Tyrannosaurus rex had tiny arms. The story of how T-Rex lost its arms is, itself, pretty simple. But the story of why it kept those little limbs, and how it used them? Well,...

Crocodiles, horseshoe crabs and tuatara are animals that have persisted for millions of years, said to have gone unchanged since the days of the dinosaurs. But even the most ancient-looking organisms show us that evolution is always at...

If you trace your way back along the tree of life, eventually you'd come face-to-face with the very first animal. But what exactly would that animal have looked like?

Why do cats love catnip so much? Researchers have found a possible evolutionary answer to this adorable feline phenomenon!

Scientists are looking to end how we categorize living fossils, and in doing so, give the phrase new life.

Why can amphibians, fish and even some reptiles regenerate limbs, while birds and mammals can’t? Researchers think they might have found a clue on the tip of the alligator’s tail.

With rising temperatures and seas, massive droughts, and changing landscapes, successfully adapting to climate change is increasingly important. For humans, this can mean using technology to find solutions. But for some plants and...

Five leading psychologists present aspects of the life and work of a professional social psychologist, and discuss some current issues in the field of social psychology. Featured are: Barbara Fredrickson (UNC Chapel Hill), Roy Baumeister...

Psychologist Barbara Fredrickson (UNC Chapel Hill) addresses a fundamental puzzle: What evolutionary role might positive emotions play?

Financial fragility does not fall from the sky. That's why treating risk as if it comes from exogenous shocks can't capture the reality of financial markets.



In Giovanni Dosi's models, systemic risk is inherent to the...

Economics is poised to go through a process similar to what physics did in the early 20th century when the Theory of Relativity superseded Newtonian physics, but did not negate it.

The National Science Board (NSB) initiated its Vannevar Bush Award in 1980 in memory of Vannevar Bush, who helped establish federal funding for science and engineering as a national priority and played a pivotal role in the creation...

This video explains what evolutionary trees are and how they show the relationships and evolution of organisms or species. It discusses the general structure of an evolutionary tree, with organisms or species at the ends of branches...

This video provides an informative overview of the human fingernail, discussing its composition, evolutionary significance, and practical functions. It emphasizes the importance of maintaining clean and groomed nails to prevent the...

Paleo-anthropologists believe Homo sapiens evolved in Africa 100 - 200 thousand years ago, and eventually moved out of Africa to populate the globe. But, how can researchers trace the specifics of that human migration? With support from...

For thousands of years scientists have named and categorized the vast array of life on Earth. This series of videos highlights the major advances concerning the classification of life, more specifically focusing on current trends in...