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Hot Topic
Origins
Origin & Evolution of Life
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Crystalline Life Patterns
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| Topic: Origin & Evolution of Life |
11/14/06 |
| Over the last half century, researchers have found that mineral surfaces may have played critical roles organizing, or activating, molecules that would become essential ingredients to all life, such as amino acids (the building blocks of proteins) and nucleic acids (the essence of DNA). |
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Hazy Life
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| Topic: Origin & Evolution of Life |
11/08/06 |
| Hazy skies on early Earth could have provided a substantial source of organic material useful for emerging life on the planet, according to a new study led by the University of Colorado at Boulder. |
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Growing a Backbone and Brain
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| Topic: Origin & Evolution of Life |
11/04/06 |
| Genetic analysis of a worm-like creature retrieved from the depths of the North Atlantic sheds light on the ancestor of chordates. This finding, implies that the brain might have evolved independently more than twice in animal lineages, has implications for our understanding of how intelligence evolves. |
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Hail to the Hornworts
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| Topic: Origin & Evolution of Life |
10/15/06 |
| In the history of life on earth, one intriguing mystery is how plants made the transition from water to land and then went on to diversify into the array of vegetation we see today, from simple mosses and liverworts to towering redwoods. |
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Bacterial Intelligence
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| Topic: Origin & Evolution of Life |
10/12/06 |
| Bacteria may not have brains, but they are intelligent. So says Lynn Margulis, co-author of Microcosmos: Four Billion Years of Microbial Evolution. To mark the 20th anniversary of the book´s publication, Astrobiology Magazine spoke with Margulis, who laid out the evidence for bacterial intelligence. |
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Bacteria Don't Have Species
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| Topic: Origin & Evolution of Life |
10/09/06 |
| Do bacteria have species? Not according to Lynn Margulis, co-author of Microcosmos: Four Billion Years of Microbial Evolution. In this interview with Astrobiology Magazine, she explains why. |
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We Are All Microbes
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| Topic: Origin & Evolution of Life |
10/05/06 |
| According to Lynn Margulis and her son Dorion Sagan, plant and animal cells came about through the fusion of various bacterial cells. Twenty years after the publication of controversial work, Microcosmos, Margulis talks about how scientific community slowly come around to accept the book´s ideas. |
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Microbial Planet
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| Topic: Origin & Evolution of Life |
10/01/06 |
| Twenty years have passed since the publication of Microcosmos: Four Billion Years of Microbial Evolution, co-authored by Lynn Margulis and her son Dorion Sagan. In this interview with Astrobiology Magazine, Margulis explains one of the book´s central ideas: symbiogenesis. |
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A Child of Human Evolution
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| Topic: Origin & Evolution of Life |
09/25/06 |
| 3.3 million years ago, a three year old girl died in Ethiopia, in an area called Dikika. Her antiquity and age at death make this find unprecedented in the history of paleoanthropology, and open new research avenues to investigate into the infancy of early human ancestors. |
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Discovering Dinos
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| Topic: Origin & Evolution of Life |
09/06/06 |
| The golden age of dinosaur discovery is yet upon us, according to Peter Dodson. He estimates 71 percent of all dinosaur genera that could be found are still awaiting discovery. His findings also indicate that dinosaur populations were stable, and not on decline, in time shortly before their extinction 65 million years ago. |
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