Refine the Results Results 1 - 10 of 43 matches Analyzing Plate Motion Using EarthScope GPS Data DATA: EarthScope GPS Data. TOOLS: Spreadsheet, Google Maps. SUMMARY: Learn how GPS monuments make precise measurements of Earth's surface. Graph motion data and map velocity vectors to explore tectonic motion and surface deformation in the Pacific Northwest.
By Carl Zimmer Posted 10.26.09 NOVA To celebrate the 150th anniversary of the Origin of Species , here's a list—by no means exhaustive—of some of the biggest advances in evolutionary biology over the past decade. These advances include not just a better understanding of how this or that group of species first evolved, but insights into the evolutionary process itself. In some cases those insights would have given Darwin himself a pleasant jolt of surprise. Ten significant leaps forward in evolution research in the past decade, as chosen and described by noted science writer Carl Zimmer Enlarge Photo credit: (Earth) © NASA; (text) © WGBH Educational Foundation Darwin envisioned natural selection acting so slowly that its effects would be imperceptible in a human lifetime.
The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world . On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history ( phylogeny ). Each page contains information about a particular group, e.g., salamanders , segmented worms , phlox flowers , tyrannosaurs , euglenids , Heliconius butterflies , club fungi , or the vampire squid . ToL pages are linked one to another hierarchically, in the form of the evolutionary tree of life. Starting with the root of all Life on Earth and moving out along diverging branches to individual species, the structure of the ToL project thus illustrates the genetic connections between all living things. read more about the Tree of Life Web Project...
Meteor Strike A meteor burst into a fireball over Siberia. Can we spot the next deadly asteroid in time? 52:53 Air Date 03/27/13 Mind of a Rampage Killer Can science help us understand why some people commit horrific acts of mass murder?
by Rick Groleau In 1987, three scientists announced in the journal Nature that they had found a common ancestor to us all, a woman who lived in Africa 200,000 years ago. She was given the name "Eve," which was great for capturing attention, though somewhat misleading, as the name at once brought to mind the biblical Eve, and with it the mistaken notion that the ancestor was the first of our species—the woman from whom all humankind descended. The "Eve" in question was actually the most recent common ancestor through matrilineal descent of all humans living today. That is, all people alive today can trace some of their genetic heritage through their mothers back to this one woman. The scientists hypothesized this ancient woman's existence by looking within the cells of living people and analyzing short loops of genetic code known as mitochondrial DNA, or mtDNA for short.