Search Results

Showing 101-120 of 955 Resources

Tagging Bumble Bees to Study Their Movements
Scientists at Work

(6 min 1 sec) Graduate student Jeremy Hemberger designs an experiment to study the foraging behavior of bumble bees in different habitats.
Mass Extinctions: Lessons from the Past
Apps and eBooks

Examine the history and causes of past mass extinctions, and the evidence for whether we are facing a sixth mass extinction, with this interactive eBook.
Ecology of Rivers and Coasts—Food Webs and Human Impacts
Lecture

Two leading ecologists describe the complex interactions between species and their environment in aquatic ecosystems.
The Great Elephant Census Modeling Activity
Activity

In this classroom activity, students will model two types of counting methods, sample counts and total counts, to determine population size.
Selection for Tuskless Elephants
Scientists at Work

(6 min 39 sec) Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues made a striking observation: many female elephants lack tusks.
Understanding Variation
Activity

This lesson complements the film The Biology of Skin Color and discusses variation in human skin color and polygenic inheritance. Also available in Spanish.
Zebrafish and Skin Color
Activity

This lesson complements the film The Biology of Skin Color and explores how experimental work in zebrafish led to a better understanding of the role of the gene SLC24A5 in human skin color.
Dead Zones in Coastal Ecosystems
Data Point

Researchers overlaid the locations of more than 400 hypoxic systems linked to eutrophication on a map of the global “human footprint.”
Exploring Trophic Cascades
Click & Learn

This interactive explores examples of what can happen when there are changes in the population size of one species in an ecosystem. How are species at other trophic levels affected? How does the ecosystem change?
Human Impacts on Biodiversity
Activity

In this activity, students will use trail camera data to answer a scientific research question about the impacts of humans on species diversity in Gorongosa.
Thermoregulation in Dinosaurs
Data Point

Grady and colleagues compared dinosaur fossil evidence with evidence from living animal species to shed more light on the type of thermoregulation that dinosaurs used—ectothermy, endothermy, or mesothermy.
Discovering Keystone Species
Poster

This classroom poster illustrates Robert Paine’s pioneering experiment that demonstrated the importance of top-down regulation of ecological communities by predators and led to his coining of the term keystone species.
Film Guide for Some Animals are More Equal than Others
Film Guide

The following classroom-ready resources complement the film Some Animals Are More Equal Than Others: Trophic Cascades and Keystone Species. It tells the story of the bold experiments by Robert Paine and James Estes, which established the importance of keystone species in regulating ecological communities and the cascades of effects set in motion by their removal.
Holiday Lectures — now downloadable!

We've just added download links for all the Holiday Lectures, both individual lectures and discussion sessions, for those people who don't have an Internet connection that allows them to...
Virus Explorer
Click & Learn

Explore the similarities and differences of a variety of viruses by sorting them based on structure, genomic make-up, host range, transmission mechanism, and vaccine availability.
Virus Hunter: Monitoring Nipah Virus in Bat Populations
Scientists at Work

(9 min 1 sec) In this video we follow scientists working in Bangladesh as they test fruit bat populations to determine whether they are infected with Nipah virus—a potentially deadly virus when passed on to humans.
Alzheimer’s Disease: Piecing Together the Evidence
Click & Learn

This interactive explores evidence from brain anatomy, tissue histology, and genetic studies to reveal possible targets for the treatment of Alzheimer’s disease.
Selective Breeding in Maize
Data Point

Researchers performed the longest-running, controlled artificial selection experiment to study whether they could increase the protein concentration of maize (corn) by selective breeding.
Using Genetic Evidence to Identify Ivory Poaching Hotspots
Data Point

A team of scientists analyzed the DNA from seized ivory to determine where the ivory from poached elephants came from.
In Memoriam: Bob Paine
Article

Sean Carroll and Bob Paine on a film shoot in January 2016.