Virginia Tech
Virginia Polytechnic Institute: Greenhouse Dinosaur Extinction Theory
This comprehensive page discusses the Asteroid Impact vs. Volcano-Greenhouse dinosaur extinction debate. It was written by paleontologist, professor, and scientist Dr. Dewey McLean.
University of California
Ucmp: What Killed the Dinosaurs?
This UC Berkeley site extensively covers the death of the dinosaurs. It includes history, theories, invalid hypotheses, and current arguments.
Utah Education Network
Uen: Trb 4:4 Investigation 6 Dinosaur Extinction
Research and analyze theories on why dinosaurs became extinct.
Other
University of Chicago: Dinosaur Extinction
This theory from the University of Chicago of dinosaur extinction revolves around the concept of plate tectonics, the movement of the continents over a sort of liquid around the planet.
PBS
Pbs Learning Media: What Killed the Dinosaurs?
This Evolution Web feature explores how evidence can support a variety of hypotheses surrounding the mystery behind the extinction of the dinosaurs.
Other
Dinosaur Extinction: One More Hypothesis
"The survivals and extinctions at the close of the Cretaceous are such as might be expected to result from intensely hot winds such as would be generated by extra large meteoritic impacts." This article suggests that this theory should...
Other
University of Bristol: The Kt Event
This dinosaur site, containing eight different sections, includes topics such as: 101 crazy theories about dinosaur extinction, the pattern and timing of extinction, evidence for late cretaceous climatic change, gradual extinction and...
Center for Educational Technologies
Earth Science Explorer: Dinosaur Floor
Take a tour of the dinosaur floor and you'll read several theories about why dinosaurs became extinct.
SEDL
Sedl: Extinction
This second activity in a course on dinosaurs is devoted to extinction. There are group activities, discussion of the idea, and a way to assess what the students have learned.
Enchanted Learning
Enchanted Learning: Zoom Dinosaurs
Zoom Dinosaurs is a comprehensive on-line hypertext book about dinosaurs. It is designed for students of all ages and levels of comprehension. It has an easy-to-use structure that allows readers to start at a basic level on each topic,...
BBC
Bbc: Rise and Fall of the Dinosaurs
Several articles that trace the chronology of the dinosaur from the Triassic to the Cretaceous. Articles were written to accompany the BBC series, Walking with Dinosaurs.
Other
Dinosaur Facts
There is plenty of information about dinosaurs here for students doing research. There are a fair number of ads but they are mainly related to dinosaurs. Besides fact pages for hundreds of dinosaurs, you will find information about...
Other
Canal Kids: Dinossauros (Dinosaurs), a Era Dos Gigantes
A good introduction to dinosaurs for young Portuguese-speaking children. Uses an engaging writing style, cartoon-style graphics, and animation to teach about the Mesozoic era. Coverage includes types of dinosaurs and their features,...
Other
Scientists Say Star Collision Caused Dinosaur Extinction
"Israeli scientists have a new theory on why the dinosaurs became extinct: cosmic radiation that bombarded the Earth following the collision of two neutron stars." This article discusses the details of the theory.
Other
Who Dunnit to the Dinosaurs?
"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...
University of California
Ucmp: The Dinosauria
The Dinosauria provides the latest information about dinosaurs, including debunking myths, early dinosaur discoveries, characteristics of specific dinosaurs, life history, and discovery of dinosaur fossils.
Lawrence Berkeley National Laboratory
Berkeley Lab: The Fruitful & Inventive Mind of Scientist Luis Alvarez
This article, reprinted from the fall 1979 LBL News Magazine, was written about Dr. Luis Alvarez and his part in the study of geological sediments and the great extinctions.
PBS
Pbs Learning Media: Mammals Get Their Chance
In this video segment adapted from NOVA, animations of an asteroid hitting Earth are used to illustrate this widely accepted theory of dinosaur extinction and the resulting conditions that favored mammals.
Other
Catastrophism and Mass Extinctions
An overview of Walter and Luis Alverez's theory that a large meteorite crashed into earth causing huge tidal waves, showers of ash, and an enormous dust cloud.
Australian Broadcasting Corporation
Australian Broadcasting Corporation: News in Science: Dinosaur 'Feathers' Are No Such Thing
From ABC News in Science, this article explores the validity behind current findings and research on the dinosaur to bird theory. The research is conducted on the Sinosauropteryx, which is a turkey-sized dinosaur with "proto-feathers."
Other
Dinosaurs' End, the Gravitational Hypothesis
The author of this site feels that there are too many problems with the current theories for why dinosaurs became extinct. He believes that his gravitational hypothesis is the correct answer, the dinosaurs suddenly got too heavy.
Curated OER
Who Dunnit to the Dinosaurs?
"One of the great mysteries in science is the extinction of the dinosaurs at the end of the Mesozoic Era some 65 million years ago. Who (or more likely what) caused it is unknown and a subject of great debate." Many theories are touched...
Famous Scientists
Famous Scientists: Luis Alvarez
Learn more about the life of the scientist that proposed the theory of mass extinction of the dinosaurs due to an asteroid or comet in this article. Read all about the life and scientific discoveries of Luis Alvarez.