99 percent of the species that have ever lived on this planet are extinct. The best way to understand when another extinction could happen is to study the previous five mass extinctions. The video discusses each one, the cause, the...

If scientists could use biotechnology to bring back extinct species, should it? A thought-provoking video explores the technical and ethical considerations of this question as part of a larger biology playlist. It explains what would be...

Extinction: i's not just for dinosaurs! Young ecologists examine the alarming facts about the causes of mass extinctions by watching this engaging Fuse School Evolution video. Topics include previous extinction events, living fossils,...

Normal background extinctions and mass extinction events are examined in this short video that suggests that environmental change, naturally occurring and change caused by humans, is the key factor in such events.

Extinctions constantly occur, but what sets off a mass extinction event? Young scientists study the data from the previous five mass extinctions to better understand their causes. Then, they learn the impact each extinction had on our...

Are we, as some scientists theorize, in the midst of the sixth mass extinction? Scholars explore speciation through adaptive radiation and extinction with a video that uses the three-spines stickleback in Alaska, and its current...

Did you know that 98 percent of organisms that ever lived are now extinct? PBS Digital Studios presents viewers with information about previous extinctions, their causes, and related statistics such as what percent of organisms went...

If you could, would you bring back mammoths or mastodons? What about resurrecting other species? Viewers consider some of the ethical and practical considerations involved in de-extinction.

How do scientists define a mass extinction event in the fossil record, and what happens when they are wrong? Scientists find living plants and animals previously believed to be extinct on almost every continent. An engaging video...

According to a popular movie series, de-extincting ancient species may not be the best idea! But, is it possible? Explore the prospect through a video that is part of a larger playlist covering mammals. The narrator compares the physical...

An incredibly thorough, and well-designed lesson teaches youngsters about the presumed extinction and rediscovery of the ivory-billed woodpecker in Arkansas. Learners discuss the environmental factors that led to the birds disappearance....

Everyone knows about the extinction of the dinosaurs, but what other mass extinctions have happened? The video explains how scientists define mass extinctions. It offers insight into the debate about the number of mass extinctions as well.

Extinction events have happen throughout geologic history, but only five mass extinctions occurred over the last 4.5 billion years. Scholars view fossils from a layer of sediment during an extinction event and observe patterns to draw...

What can fossils tell us about periods of extinction? Young scholars interpret fossil layers to make conclusions about changes in life during different geological time periods. They analyze the fossils for abundance and diversity as well...

Young scholars examine reasons that animals become extinct. They participate in a simulation to discover that animals loss of home is the main factor that puts species near extinction in North America. Students examine over-hunting and...

The focus of a fossil-based lesson uses graphs and charts that allow young paleontologists to make inferences about events of mass extinction. They must apply their previous knowledge about fossil records in this final lesson of the...

It's time to save endangered species through engineering. The third lesson in a nine-part Life Science unit has young environmentalists study species extinction. An engaging discussion leads to some ideas on how to use engineering design...

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...