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After Charles Darwin first visited the island archipelago of Galapagos in 1839, it took him another twenty years to decipher that the scene he'd witnessed was the most perfectly preserved biodiversity on the planet. His theory of evolution, published 150 years ago, pulled back the curtain on a debate that had been simmering for years, and still percolates. Today Darwin would be surprised by the tourist mecca Galapagos has become--200,000 visitors a year, 40,000 permanent residents. The impact on the most unique collection of endemic wildlife in the world has been heavy. Too many people are bringing too many of their ways (and invasive species) from the outside world that are threatening the future of this one-of-a-kind place. What would Darwin think of how Galapagos has evolved in the twenty-first century?
(Source: DCMP)
Ten thousand years ago, corn didn’t exist anywhere in the world, and until recently scientists argued vehemently about its origins. Today the crop is consumed voraciously by humans, by livestock, and as a major part of processed foods. So where did it come from? Evolutionary biologist Neil Losin tells the story of the genetic changes involved in the transformation of a wild grass called teosinte into corn. Evidence from genetics supports archeological findings pinpointing corn’s origins to a very particular time and place in Mexico.
Researchers hitch a ride with the Mexican Navy to visit the breathtakingly beautiful but critically endangered island habitat of Guadeloupe Island. Led by Drs. Borja Mila and Ellen Ketterson, the team sets out to collect some of the first modern data and genetic samples from the juncos found on the remote island, with the goal of learning the origins and evolutionary history of this mysterious species. What they find could have important implications for the future of this fascinating but imperiled population of juncos. Part of Ordinary Extraordinary Junco (Chapter 5).
Human ancestors in Africa likely had dark skin, which is produced by an abundance of the pigment eumelanin in skin cells. In the high ultraviolet (UV) environment of sub-Saharan Africa, darker skin offers protection from the damaging effects of UV radiation. Dr. Jablonski explains that the variation in skin color that evolved since human ancestors migrated out of Africa can be explained by the tradeoff between protection from UV and the need for some UV absorption for the production of vitamin D.
Throughout North America, the species known as the dark-eyed junco exhibits striking differences in feather color, body size, and behavior from place to place. These variations among subspecies have caught the attention of biologists interested in diversification, evolution, and speciation. This segment features footage from junco habitats across the continent as researchers try to decode the riddle of the Junco’s evolutionary history. Part of Ordinary Extraordinary Junco (Chapter 3).
Penguins are smallish, waddling birds. However, scientists have discovered that they evolved from a giant, flying ancestor millions of years ago. Part of the "Eons" series.
Part of the "Visualizing Cell Processes" series. Includes the following modules: "The Cell Machinery," "A Variety of Cells," "Organic Molecules: The Building Blocks of Life," "Prokaryote Evolution and Diversity," and "Independently Living Eukaryotic Cells."
Ancient primate progenitors had bodies a lot like those of modern monkeys and spent tens of millions of years living in trees. From them, humans inherited versatile hands, amazing vision, and capable brains. Part of the “Your Inner Fish” series.
This episode explores the timing of when dogs first became domesticated. Most scientists agree that it took thousands of years to develop the deep bond between humans and dogs. Part of the "Eons" series.
Venomous animals have evolved a variety of mechanisms that deliver toxins to would-be predators and prey. Curator Mark Siddall discusses some of the anatomical features these venomous animals have adapted.
Just a few thousand years ago, the island of Madagascar was inhabited by giant lemurs. How did such a diverse group of primates evolve in the first place, and how did they help shape the unique environments of Madagascar? Part of the "Eons" series.
In Japan a heated war between honeybees and giant hornets is being fought to the death. Armed by evolution, which species can ensure its own survival? Segment of video from Wild Chronicles Series.
At the University of Montana, Ken Dial researches the mechanics of bird flight. He studies young birds that are learning to fly, and he hopes his experiments will provide new evidence for how flight might have evolved.
The fossils of bats resemble the bat of today with some differences related to leg length and location of claws. Their fossils are also found on all the continents except Antarctica, and they appear in these areas around the same time. So what are the origins of bats? Part of the "Eons" series.
The dinosaurs were headed for trouble. They ate nothing but junk food. They never brushed their teeth. They stayed up all night, and they jumped off cliffs even though they could not fly. To avoid extinction, they evolved into birds.
Is there life on other planets? How can it be found? Presents the scientific theory of life's beginning and evolution on earth before considering life within our solar system and beyond. Discusses possible planet formation from stellar dust and technology's place in locating such planets.
Long necks gave sauropods a huge advantage when it came to food. This benefit also enabled them to become the biggest terrestrial animals of all time. Part of the “Eons” series.
Robotics is gaining more and more ground in all areas of everyday life. It is increasingly common to see robots in the industrial field, in the workplace, or just being used for fun. Recently, robots have found their place in the educational field. This episode traces the evolution of robots and discusses the technological advances made in the world of robotics.
In Hawaii, biological detectives study the honeycreeper, a bird once on the edge of extinction, now making a surprising comeback despite habitat destruction and non-native mosquito borne-disease. Is rapid evolution the answer? Segment of video from Wild Chronicles Series.
In this episode, host Jason Silva explores the many layers of language. Some of the exercises and activities focus on the evolution of words, the links between what one sees and hears, and the mysterious communication abilities of twins. Part of the "Brain Games Family Edition."
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Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
