Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish, and more than 350,000 species of beetles. What explains this explosion of living creatures—1.4 million different species discovered so far, with perhaps another 50 million to go? The source of life's endless forms was a profound mystery until Charles Darwin brought forth his revolutionary idea of natural selection. But Darwin's radical insights raised as many questions as they answered. What actually drives evolution and turns one species into another? To what degree do different animals rely on the same genetic toolkit? And how did we evolve?
"What Darwin Never Knew" offers answers to riddles that Darwin couldn't explain. Breakthroughs in a brand-new science—nicknamed "evo devo"—are linking the enigmas of evolution to another of nature's great mysteries, the development of the embryo. NOVA takes viewers on a journey from the Galapagos Islands to the Arctic, and from the explosion of animal forms half a billion years ago to the research labs of today. Scientists are finally beginning to crack nature's biggest secrets at the genetic level. The results are confirming the brilliance of Darwin's insights while revealing clues to life's breathtaking diversity in ways the great naturalist could scarcely have imagined.
Online Science Documentaries
The best free online science documentaries from around the web -- all in one place.
Friday, December 17, 2010
Tuesday, December 14, 2010
Mind Over Money
In the aftermath of the worst financial crisis since the Great Depression, NOVA presents "Mind Over Money"—an entertaining and penetrating exploration of why mainstream economists failed to predict the crash of 2008 and why we so often make irrational financial decisions. The program reveals how our emotions interfere with our decision-making and explores controversial new arguments about the world of finance. In the face of the recent crash, can a new science that aims to incorporate human psychology into finance—behavioral economics—help us make better financial decisions?
Monday, December 13, 2010
The End of God?: A Horizon Guide to Science and Religion
As the Pope ends his visit to Britain, historian Dr Thomas Dixon delves into the BBC's archive to explore the troubled relationship between religion and science. From the creationists of America to the physicists of the Large Hadron Collider, he traces the expansion of scientific knowledge and asks whether there is still room for God in the modern world.
The relationship between science and religion has been long and troubled: from the condemnation of Galileo by the Catholic Church in 17th century Italy, through the clashes between creationism and evolution in 20th century America, right up to recent claims that the universe does not need God.
Delving through the rich archive of programmes from Horizon and BBC Science, Thomas Dixon looks at what lies behind this difficult relationship. Using original footage from 1925, he tells the story of John Scopes, a Tennessee teacher who was tried for teaching evolution. He sees the connections between religion and American politics in the story of a more recent court case -- the trial of Intelligent Design. He looks at what happens when new scientific discoveries start to explain events that were once seen as the workings of God, and explains how some of our most famous scientists have seen God in the grandest laws of the universe. Finally, he finds intriguing evidence from brain science which hints that belief in God is here to stay.
The relationship between science and religion has been long and troubled: from the condemnation of Galileo by the Catholic Church in 17th century Italy, through the clashes between creationism and evolution in 20th century America, right up to recent claims that the universe does not need God.
Delving through the rich archive of programmes from Horizon and BBC Science, Thomas Dixon looks at what lies behind this difficult relationship. Using original footage from 1925, he tells the story of John Scopes, a Tennessee teacher who was tried for teaching evolution. He sees the connections between religion and American politics in the story of a more recent court case -- the trial of Intelligent Design. He looks at what happens when new scientific discoveries start to explain events that were once seen as the workings of God, and explains how some of our most famous scientists have seen God in the grandest laws of the universe. Finally, he finds intriguing evidence from brain science which hints that belief in God is here to stay.
Sunday, December 12, 2010
Hubble's Amazing Rescue
The best-known scientific instrument in history was dying. After nearly 20 years in space and hundreds of thousands of spectacular images, the Hubble Space Telescope's gyroscopes and sensors were failing, its batteries running down, and some of its instruments were already dead. The only hope to save Hubble was a mission so dangerous that in 2004 NASA cancelled it because it was considered too risky.
Scientists and the general public alike stubbornly refused to abandon the telescope, and a new NASA administrator revived the mission. This program takes viewers behind the scenes on a riveting journey with the team of astronauts and engineers charged with saving the famous "orbiting observatory" against all odds.
Scientists and the general public alike stubbornly refused to abandon the telescope, and a new NASA administrator revived the mission. This program takes viewers behind the scenes on a riveting journey with the team of astronauts and engineers charged with saving the famous "orbiting observatory" against all odds.
Wednesday, December 1, 2010
Becoming Human, part 3: Last Human Standing
In "Last Human Standing," the final program of the three-part series "Becoming Human," NOVA examines the fate of the Neanderthals, our European cousins who died out as modern humans spread from Africa into Europe during the Ice Age. Did modern humans interbreed with Neanderthals or exterminate them? The program explores crucial evidence from the recent decoding of the Neanderthal genome.
How did modern humans take over the world? New evidence suggests that they left Africa and colonized the rest of the globe far earlier, and for different reasons, than previously thought. As for Homo sapiens, we have planet Earth to ourselves today, but that's a very recent and unusual situation. For millions of years, many kinds of hominids co-existed. At one time Homo sapiens shared the planet with Neanderthals, Homo erectus, and the mysterious "Hobbits"–three-foot-high humans who thrived on the Indonesian island of Flores until as recently as 12,000 years ago.
"Last Human Standing" examines why "we" survived while those other ancestral cousins died out. And it explores the provocative question: In what ways are we still evolving today?
The other programs in the series are Part 1: "First Steps," which looks at how, for millions of years, many species of small-brained human predecessors lived, and Part 2: "Birth of Humanity," which profiles the earliest species of humans.
How did modern humans take over the world? New evidence suggests that they left Africa and colonized the rest of the globe far earlier, and for different reasons, than previously thought. As for Homo sapiens, we have planet Earth to ourselves today, but that's a very recent and unusual situation. For millions of years, many kinds of hominids co-existed. At one time Homo sapiens shared the planet with Neanderthals, Homo erectus, and the mysterious "Hobbits"–three-foot-high humans who thrived on the Indonesian island of Flores until as recently as 12,000 years ago.
"Last Human Standing" examines why "we" survived while those other ancestral cousins died out. And it explores the provocative question: In what ways are we still evolving today?
The other programs in the series are Part 1: "First Steps," which looks at how, for millions of years, many species of small-brained human predecessors lived, and Part 2: "Birth of Humanity," which profiles the earliest species of humans.
Tuesday, November 30, 2010
Becoming Human, part 2: Birth of Humanity
In "Birth of Humanity," the second part of the three-part series "Becoming Human," NOVA investigates the first skeleton that really looks like us–"Turkana Boy"–an astonishingly complete specimen of Homo erectus found by the famous Leakey team in Kenya. These early humans are thought to have developed key innovations that helped them thrive, including hunting large prey, the use of fire, and extensive social bonds.
The program examines an intriguing theory that long-distance running–our ability to jog–was crucial for the survival of these early hominids. Not only did running help them escape from vicious predators roaming the grasslands, but it also gave them a unique hunting strategy: chasing down prey animals such as deer and antelope to the point of exhaustion. "Birth of Humanity" also probes how, why, and when humans' uniquely long period of childhood and parenting began.
The other programs in the series are Part 1: "First Steps," which looks at how, for millions of years, many species of small-brained human predecessors lived, and Part 3: "Last Human Standing," which examines why, of various human species that once shared the planet, only our kind remains.
The program examines an intriguing theory that long-distance running–our ability to jog–was crucial for the survival of these early hominids. Not only did running help them escape from vicious predators roaming the grasslands, but it also gave them a unique hunting strategy: chasing down prey animals such as deer and antelope to the point of exhaustion. "Birth of Humanity" also probes how, why, and when humans' uniquely long period of childhood and parenting began.
The other programs in the series are Part 1: "First Steps," which looks at how, for millions of years, many species of small-brained human predecessors lived, and Part 3: "Last Human Standing," which examines why, of various human species that once shared the planet, only our kind remains.
Monday, November 29, 2010
Becoming Human, part 1: First Steps
Where did we come from? What makes us human? An explosion of recent discoveries sheds light on these questions, and NOVA's comprehensive, three-part special, "Becoming Human," examines what the latest scientific research reveals about our hominid relatives.
Part 1, "First Steps," examines the factors that caused us to split from the other great apes. The program explores the fossil of "Selam," also known as "Lucy's Child." Paleoanthropologist Zeray Alemseged spent five years carefully excavating the sandstone-embedded fossil. NOVA's cameras are there to capture the unveiling of the face, spine, and shoulder blades of this 3.3 million-year-old fossil child. And NOVA takes viewers "inside the skull" to show how our ancestors' brains had begun to change from those of the apes.
Why did leaps in human evolution take place? "First Steps" explores a provocative "big idea" that sharp swings of climate were a key factor.
The other programs in the "Becoming Human" series are Part 2: "Birth of Humanity," which profiles the earliest species of humans, and Part 3: "Last Human Standing," which examines why, of various human species that once shared the planet, only our kind remains.
Part 1, "First Steps," examines the factors that caused us to split from the other great apes. The program explores the fossil of "Selam," also known as "Lucy's Child." Paleoanthropologist Zeray Alemseged spent five years carefully excavating the sandstone-embedded fossil. NOVA's cameras are there to capture the unveiling of the face, spine, and shoulder blades of this 3.3 million-year-old fossil child. And NOVA takes viewers "inside the skull" to show how our ancestors' brains had begun to change from those of the apes.
Why did leaps in human evolution take place? "First Steps" explores a provocative "big idea" that sharp swings of climate were a key factor.
The other programs in the "Becoming Human" series are Part 2: "Birth of Humanity," which profiles the earliest species of humans, and Part 3: "Last Human Standing," which examines why, of various human species that once shared the planet, only our kind remains.
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