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Ancestral Lines 2 clicks please

Ancestral Lines 2 clicks please
Evolutionary biologists use a cladogram, the treelike diagram of evolutionary branches or clades, to organize species into lines of evolutionary descent across time. Biologists use three types of evidence to deduce evolutionary connections: genetics, morphology, and geologic dating. (Behavior, normally a key part of evolutionary studies, can only be inferred in extinct species — for example, by examining the ecology in which the species flourished and the species adaptations for eating and locomotion.) Analyses of primate fossils and the genetic relatedness of living primates converge to the conclusion that humans and chimpanzees branched from a common ancestor about 7 million years ago. DNA recovered from several uncontaminated Neanderthalensis fossils indicated that modern humans and extinct neanderthals diverged about 400,000 years ago; but more recent studies show that they must have interbred within Europe or the Middle East since then.

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In a Tooth, DNA From Some Very Old Cousins, the Denisovans A tooth fossil discovered in a Siberian cave has yielded DNA from a vanished branch of the human tree, mysterious cousins called the Denisovans, scientists said Monday. Their analysis pushes back the oldest known evidence for Denisovans by 60,000 years, suggesting that the species was able to thrive in harsh climates for thousands of generations. The results also suggest that the Denisovans may have bred with other ancient hominins, relatives of modern humans whom science has yet to discover. Todd Disotell, a molecular anthropologist at New York University who was not involved in the new study, said the report added to growing evidence that our species kept company with many near relatives over the past million years. The world, Dr. Disotell said, “was a lot like Middle-earth.”

China History: Chronology, Dynasty Qin Han Tang Song Yuan Ming Qing China, one of the countries that can boast of an ancient civilization, has a long and mysterious history - almost 5,000 years of it! Like most other great civilizations of the world, China can trace her culture back to a blend of small original tribes which have expanded till they became the great country we have today. It is recorded that Yuanmou man is the oldest hominoid in China and the oldest dynasty is Xia Dynasty. From the long history of China, there emerge many eminent people that have contributed a lot to the development of the whole country and to the enrichment of her history. Among them, there are emperors like Li Shimin (emperor Taizong of the Tang), philosophers like Confucius, great patriotic poets like Qu Yuan and so on. Chinese society has progressed through five major stages - Primitive Society, Slave Society, Feudal Society, Semi-feudal and Semi-colonial Society, and Socialist Society.

Poster Downloads Classroom Resource Poster: Viral Diversity … run in the millions. This poster illustrates the wide variety of viral size, geometry, and genome type. (This poster is designed to printed at a maximum size … The poster from the 2010 Holiday Lectures, Viral Outbreak: The Science of Emerging Disease, illustrating the size, geometry, and different classifications of viruses … Gloria Steinem greets protesters at the barricades before speaking at the Women's March on Washington.John Minchillo/AP An estimated half a million people joined the Women's March on Washington on a crisp Saturday the day after Donald Trump was sworn in as the 45th President of the US. The march aims to bring together women across diverse backgrounds and send a bold message to the new administration that they will not be ignored or have their rights stomped on. People carried signs with calls for gender equality and anti-Trump statements, though the rally's organizers have insisted the demonstration is more pro-women than anti-Trump.

Research finds Neanderthals were more thoughtful than we once imagined Researcher Svante Paabo with a reconstructed Neanderthal skull. He says it’s not clear whether modern humans killed off these ancient relatives or simply outdid them in the competition for habitat. (Frank Vinken) Maybe it’s their famously protruding brow ridge or perhaps it’s the now-discredited notion that they were primitive scavengers too dumb to use language or symbolism, but somehow Neanderthals picked up a reputation as brutish, dim and mannerless cretins. Yet the latest research on the history and habits of Neanderthals suggests that such portrayals of them are entirely undeserved.

What America’s immigrants looked like when they arrived on Ellis Island We hear so often that America is "a nation of immigrants" or a "cultural mixing pot" that the phrase has become kind of a tired cliche. But actually seeing that history is a different story. The fascinating photographs below -- of people in their native costume passing through Ellis Island in the early 20th Century -- hint at just how incredible and unique America's history is as a nation of immigrants. These photos were taken by Augustus Sherman, an amateur photographer who worked as the chief registry clerk on Ellis Island from 1892 until 1925.

Has the ‘Human Epoch’ Begun and is a Mass Extinction Near? Nature Published on December 30th, 2010 | by Michael Ricciardi As we near 2011, I know I must try to prepare myself for 2012, and the (next) wave of apocalyptic doom-saying that, according to the ‘fin-de-cyclists’, was predicted by the ancient Mayan mathematicians over 3 thousand years ago. Of course, they never predicted an End, per se, it’s just that they only extended their 260 day, cyclical calendar* to December 22, 2012 (near the winter solstice, a fitting day to be sure); they probably thought that was just plenty.

Women's March Is The Biggest Protest In US History As An Estimated 2.9 Million March Millions of Americans have taken to the streets from New York to Los Angeles and everywhere in between as the Women’s Marches on Washington is estimated to be the biggest one-day protest in US history. UConn professor Jeremy Pressman is keeping a running total of crowd estimates across the United States in a Google document. An estimated 60,000 people marched in Atlanta. 250,000 are marching in Chicago. There are estimates of 250,000 people in Boston, and 200,000 more in Denver. In New York, the estimate ranges from 200,000-500,000. City officials estimate that 500,000 people participated in the main march in Washington, DC.

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