Macroevolution: The basics
Explore the processes behind major radiations and extinctions and other grand patterns in the history of life.
This article is located within Evolution 101.Evolution at different scales: Micro to macro
Microevolution and macroevolution encompass change at very different scales, but both work through the same basic processes. Darwin's "extreme" imperfection? 
Darwin used the words "extreme imperfection" to describe the gappy nature of the fossil record - but is this really such a problem? This article delves into the topic of transitional fossils and explores what we have learned about them since Darwin's time.
This article appears at SpringerLink. Deep Time
This interactive timeline covers 4.5 billion years of Earth’s history, highlighting important events in the areas of geology, biodiversity, and extinction.
This resource appears at PBS’s Evolution website. How to survive a mass extinction: The work of David Jablonski
Through detailed analysis of patterns in the fossil record, scientist David Jablonski reconstructs the rules that helped dictate who lived and died in past mass extinctions. This research profile describes his surprising discoveries and their disturbing implications for the biodiversity crisis today. Interactive investigation: The arthropod story 
This interactive investigation delves into the amazing world of the arthropods and examines their success and their evolutionary constraints. It takes teamwork: How endosymbiosis changed life on Earth
You might be surprised to learn that descendents of an ancient bacterium are living in every cell of your body! Find out how endosymbiosis factored into the evolution of your own cells. Parsimonious explanations for punctuated patterns
Punctuated equilibrium is sometimes erroneously cited as evidence that evolutionary biology still hasn't figured out how evolution works. In fact nothing could be further from the truth. Punctuated equilibrium builds on (not tears down!) established evolutionary theory. Find out how the process works.
This article appears at SpringerLink. Webcast: Fossils, genes, and embryos
In lecture three of a four part series, evolutionary biologist David Kingsley examines the original objections to Darwin's theory and shows how modern evidence supports the theory.
This lecture is available from Howard Hughes' BioInteractive website. Webcast: Selection in action
In lecture two of a four part series, evolutionary biologist David Kingsley discusses how just a few small genetic changes can have a big effect on morphology, using examples from maize, dog breeding, and stickleback fish.
This lecture is available from Howard Hughes' BioInteractive website. Why the eye?
Eyes are something of an icon of evolution. How did such an integrated, multi-part adaptation evolve? While many different animals have complex eyes, untangling their evolutionary history reveals both remarkable diversity and surprising similarity. Evo in the news: The new shrew that's not
This news brief from March of 2008 describes scientists' discovery of a new mammal species, a giant elephant shrew. Though elephant shrews resemble regular shrews, recent genetic evidence suggests that elephant shrews actually sprang from a much older (and perhaps more charismatic) branch of the tree
of life - the one belonging to elephants and their relatives. Evo in the news: Where species come from
Lush tropical ecosystems house many times more species than temperate or Arctic regions. This news brief from November 2006 discusses the evolutionary explanation for this diversity trend and reveals why threats to tropical ecosystems may threaten diversity on a global scale. Interview: Anthony Barnosky on climate change and mammal evolution
UC Berkeley Professor Anthony Barnosky gives the inside scoop on how climate change has affected past speciation of mammals and how it may affect biodiversity in the future.
This article appears at ActionBioscience.org. Interview: Nicole King on the origins of multicellularity
Biologist and UC Berkeley Professor Nicole King explains how she investigates a major transition in evolutionary history: the evolution of multicellular life forms from unicellular ones.
This article appears at ActionBioscience.org. Tree of Life
This interactive web resource allows you to follow any branch on the tree of life to find out how scientists hypothesize all the species on Earth (plus some extinct lineages) are related to one another.
This resource appears at the Tree of Life website. | 
