background preloader

Evolution: Deep Time Timeline

Evolution: Deep Time Timeline

Baba Brinkman’s Rap Guide to Evolution Science and hip-hop? “Never the twain shall meet,” you may cry, and until recently, I’d have agreed with you on that one, fo’ shizzle. But then I stumbled across a collaboration which challenges that assumption. The video below, “Natural Selection”, has its tongue firmly in its cheek, featuring a dance-off between Darwin and some of his best-known opponents, including the perennial favourite, God, and a more modern proponent of creationism, Sarah Palin. Fellow SciAm blogger Kevin Zelnio wrote about Baba back in November, but this unique rapper warrants a bit more attention – and a few links to his official music videos. Subtitled “Beats, Rhymes and the Science of Life” in an homage to early Tribe Called Quest, this unusual album originated when Professor Mark Pallen, a microbial geneticist at the University of Birmingham, UK, requested a rap version of the Darwin’s seminal work to celebrate our hero’s 200th birthday in 2009.

The History and Geography of Inventions [Home Page][Other Page] [Search Inventions] [Before 10,000 BC][10,000 BC to 4000 BC][4000 BC to 3000 BC][3000 BC to 2000 BC][2000 BC to 1000 BC][1000 BC to 1 BC][1 AD to 1000 AD][1000 to 1500][1500 to 1700][1700 to 1800][1800 to 1850][1850 to 1900][1900 to 1950][Since 1950] [Inventions][Biographies][Religions of the World][Bible Contradictions][Rain][Countries of the World][Cookery][Music][Composers (Opera)] [Readers' Feedback (Religion)] [Language][Travel][Eclipses][London][Astronomy][Mathematics][Physics][Chemistry][Biology][Football][Television][Other] Sponsored Link Understanding Evolution The bacteria that changed the world - May, 2017 The make-up of Earth's atmosphere, once the domain of Earth science textbooks, has become an increasingly "hot" news topic in recent decades, as we struggle to curb global warming by limiting the carbon dioxide that human activity produces. While the changes that humanity has wrought on the planet are dramatic, this isn’t the first time that one species has changed Earth’s atmosphere. Three billion years ago, there was no free oxygen in the atmosphere at all. Read the rest of the story here | See the Evo in the News archive

Peabody Museum - Tree of Life Learn about the Tree of Life! Pick a topic to learn about, or press the "Next Section" button below to go in order: What is the Tree of Life? What is a Phylogenetic Relationship? Evolution Along the Branches Extreme Divergence! Convergent Evolution Convergent Insect Eaters A Succulent Convergence Big Surprises in the Tree of Life Elephant Shrews Afrotheria - Elephants, Elephant Shrews, and More! A Monumental Scientific Challenge Computational Complexity Why Study the Tree of Life? Phylogenetic Predictions Darwin Happiest at home with his notebooks and his microscope, he shunned the public eye. Controversy made him ill. This brilliant observer of nature kept his most original and revolutionary idea under wraps for decades. Yet today, two centuries after Charles Darwin's birth, nearly everyone knows his name. What did Darwin do, and why does he still matter so much? Keenly observing nature in all its forms--from fossil sloths to mockingbirds, primroses to children--Darwin saw that we all are related. Darwin's theory of evolution by natural selection underlies all modern biology. Charles Darwin looked closely at life. With persistence and passion, Darwin set out to find answers. The American Museum of Natural History gratefully acknowledges The Howard Phipps Foundation for its leadership support.

GEOL 104: The Colonization of Land and Life on Land Before the Dinosaurs Fall Semester 2013The Colonization of Land and Life on Land Before the Dinosaurs I. The Colonization of Land Life on Earth first evolved in the seas over 3.5 billion years ago, and even today the majority of living things are aquatic. Gravity: aquatic life is buoyed by water. The first organisms that spent at least sometime out of water were algae mats along the edges of seas and lakes (which are among the oldest fossils known!) Among the first fully terrestrial organisms were true primitive plants that had colonized land by the Silurian Period (443.4-419.2 Ma). The first terrestrial animals were various types of arthropods (bugs, broadly defined): the ancestors of millipedes and centipedes, the earliest arachnids, and the ancestors of insects were established on land in the Silurian Period. (Other groups, such as earthworms, other worms, snails, and so on colonized during this time.) The ancestors of the dinosaurs (and us!) In other words, tetrapods were now freed from the water. II.

GEOL 104: Systematics Fall Semester 2013Systematics I. The Tree of Life The most important pattern: the Tree of Life. Darwin and Wallace demonstrated the reality of Divergence through Time and Common Ancestry: Divergence from common ancestors Two (or more) distinct variations in an ancestral population convey their own advantage against the rest of the population Over time, these two (or more) variations will become more distinct from each other If they diverge enough, they will no longer be able to mate with each other: will be different species Divergence can also occur (perhaps more commonly!) This allowed a framework for a new style of systematics: Darwin recognized that levels of similarity came about because of recency of common ancestry. Darwin advocated a change in Linnean classification reflect the pattern of common ancestry (he used the more Victorian phrase "propinquity of descent"). Ernst Haeckel coined the word phylogeny for a "family tree" of Life (or some subset thereof). II. So, in review: III.

History of evolutionary thought Evolutionary thought, the conception that species change over time, has roots in antiquity, in the ideas of the ancient Greeks, Romans, and Chinese as well as in medieval Islamic science. With the beginnings of biological taxonomy in the late 17th century, Western biological thinking was influenced by two opposed ideas. One was essentialism, the belief that every species has essential characteristics that are unalterable, a concept which had developed from medieval Aristotelian metaphysics, and that fit well with natural theology. Following the establishment of evolutionary biology, studies of mutation and variation in natural populations, combined with biogeography and systematics, led to sophisticated mathematical and causal models of evolution. Antiquity[edit] Greeks[edit] Proposals that one type of animal, even humans, could descend from other types of animals, are known to go back to the first pre-Socratic Greek philosophers. Chinese[edit] Romans[edit] Augustine of Hippo[edit]

Evolution: 24 myths and misconceptions - life - 16 April 2008 If you think you understand it, you don't know nearly enough about it It will soon be 200 years since the birth of Charles Darwin and 150 years since the publication of On the Origin of Species, arguably the most important book ever written. In it, Darwin outlined an idea that many still find shocking - that all life on Earth, including human life, evolved through natural selection. Darwin presented compelling evidence for evolution in On the Origin and, since his time, the case has become overwhelming. And yet despite an ever-growing mountain of evidence, most people around the world are not taught the truth about evolution, if they are taught about it at all. For those who have never had the opportunity to find out about biology or science, claims made by those who believe in supernatural alternatives to evolutionary theory can appear convincing. Most of us are happy to admit that we do not understand, say, string theory in physics, yet we are all convinced we understand evolution.

Common descent In evolutionary biology, a group of organisms share common descent if they have a common ancestor. There is strong evidence that all living organisms on Earth are descended from a common ancestor, called the last universal ancestor or LUA (or last universal common ancestor, LUCA).[1][2] Common ancestry between organisms of different species arises during speciation, in which new species are established from a single ancestral population. Organisms which share a more recent common ancestor are more closely related. Universal common descent through an evolutionary process, that there was only one progenitor for all life forms, was first proposed by Charles Darwin in On the Origin of Species, which ended with "There is a grandeur in this view of life, with its several powers, having been originally breathed into a few forms or into one".[8] The theory has been recently popularized by Richard Dawkins, in The Ancestor's Tale, and others. History[edit] Evidence of universal common descent[edit]

Evidence of common descent Evidence of common descent of living things has been discovered by scientists working in a variety of fields over many years. This evidence has demonstrated and verified the occurrence of evolution and provided a wealth of information on the natural processes by which the variety and diversity of life on Earth developed. This evidence supports the modern evolutionary synthesis, the current scientific theory that explains how and why life changes over time. Evolutionary biologists document evidence of common descent: making testable predictions, testing hypotheses, and developing theories that illustrate and describe its causes. Fossils are important for estimating when various lineages developed in geologic time. Further evidence comes from the field of biogeography because evolution with common descent provides the best and most thorough explanation for a variety of facts concerning the geographical distribution of plants and animals across the world. Genetics[edit] DNA sequencing[edit]