Life before the dinosaurs was pretty amazing—and very fragile! Discover what Earth was like for Cambrian creatures, from the smallest ocean-dwellers to the first land animals. A video from an extensive biology playlist explores how early...

If aliens visit Earth a million years from now, what will they find? Explore the Anthropocene epoch with a hard-hitting video. Viewers examine the changes humankind has made to the planet, how these overshadow events of the past, and...

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...

Trilobites survived on Earth for longer than mammals have, so what was their secret? From their evolution to diversity, they survived multiple large changes in the environment—and even flourished. Then, in the matter of less than a...

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...

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,...

Need help putting together an uncommonly good unit about common ancestry? Check out a video that covers NGSS standard LS4A, Evidence of Common Ancestry and Diversity. Topics include ways to convey similarities and differences between...

How do ecosystems react to change over time? Show your class how natural and man-made factors affect the organisms in an area using the guidelines in a video about standard LS2C. Topics include biotic and abiotic factors, biodiversity,...

Should cuteness be the top priority in wildlife conservation efforts? Science scholars ponder the process of determining how best to spend conservation dollars in an insightful video. The narrator discusses the strategy of conserving...

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.

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.

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...

Since avocados are fruits, is guacamole a smoothie? The video explains how trees that produce fruit with no natural way to spread their seeds are still alive. It goes into detail about avocado trees and ginko biloba trees.

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...

Warblers are small birds that have been known to get caught in spider webs. The video covers community ecology, focusing on the Competitive Exclusion Principle using the example of warblers. It also includes fundamental versus realized...

This follow-up to "Could Just One Degree..." explains the major changes that would occur if the earth's climate continues to rise. See as many animals and their habitats are affected, continuing to "3 Degrees Warmer..." as more and more...

Thermophiles and other microbes give hints as to how life can continue in extreme temperatures. Fossils in the Namibian Desert are relatively undisturbed and offer other keys to life. Your biology and earth science classes will want to...

A three-degree difference changes places like the Mediterranean to look like the Middle East. Extreme weather patterns such as El Nino become the norm. An extreme heat wave in Paris just recently gave us a taste of what warmer weather...

How do scientists know what really killed the dinosaurs? This clip explains what the KT boundary is and what it means in relation to dinosaur extinction. This clip is very short and seems to be a part of a larger BBC special on dinosaur...

What evidence do we have to prove the theory that a huge asteroid led to the extinction of the dinosaurs? This two-minute clip gives a brief look at the evidence geologists have found to prove their theory.

This video segment from Evolution: "Extinction!" shows how biological control is successfully combating North Dakota's infestation of leafy spurge, a non-native plant. [4:43]

This video segment describes how the Australopithecus afarensis skeleton known as Lucy could have been fossilized. Footage courtesy of NOVA: "In Search of Human Origins." [2:34]

In this video segment from Evolution: "Extinction!", geologist Peter Ward discusses evidence for a Permian-Triassic mass extinction. [2 min, 20 sec]