The Human Brain. Earth 100 Million Years From Now. Electric fish diverging. Carl Hopkins Although these fish look alike and have the same DNA genetic makeup, they have very different electrical signals and will only mate with fish that produce the same signals.
Cornell researchers believe that these different electrical signals are the fishes' first step in diverging into separate species. Avoiding quicksand along the banks of the Ivindo River in Gabon, Cornell neurobiologists armed with oscilloscopes search for shapes and patterns of electricity created by fish in the water. They know from their previous research that the various groups of local electric fish have different DNA, different communication patterns and won't mate with each other. However, they now have found a case where two types of electric signals come from fish that have the same DNA. The researchers' conclusion: The fish appear to be on the verge of forming two separate species.
Except for some, Arnegard has discovered. "This might be a snapshot of evolution," Arnegard said. Wellcome Trust. Feather And Hammer Drop On Moon. Wave Machine. Sunmotions.swf (application/x-shockwave-flash Object) Evolution – what next? Build an Atom. Evolution_study_new.jpg (JPEG Image, 328x502 pixels) Twenty Four Hour View of the Sky. Evo_large.gif (GIF Image, 2420x915 pixels) - Scaled (45%) NCSE-Table-1_lg.gif (GIF Image, 600x768 pixels) PBS Evolution - Great Transformations. Exploring Life's Origins: A Virtual Exhibit. Powers of Ten. Based on the film by Charles and Ray Eames. An Eames Office Website.
Ben Goldacre Talks Bad Science.
Genetics. Zoom into a human eye - a Tech & Science video. The Evolution of the Eye. MAKE HOMEMADE SCIENCE TOYS AND PROJECTS. Top 40 Arduino Projects of the Web. Soda Can Shake-Up - Cool Science Experiment. How to turn "water" into marbles. Non-Newtonian Fluid on a Speaker Cone.
Freaky cornstarch monster. Zoom into Brass - a Tech & Science video. Learn the Science Behind Glow Sticks by Making Your Own. ScienceWorld. Scirus - for scientific information. Top 10 Most Influential Scientists - Top 10 Lists. This is part one of what will be a two part series on the most influential scientists in history.
While these are not technically the “greatest” scientists, there is bound to be some overlap as the contributions that many of these men and women made to science are among the most important. Be sure to tell us who you think should be on the future list – we already have our second ten, but it might lead to a third or fourth.
Marie Curie “One never notices what has been done; one can only see what remains to be done.” Polish physicist and chemist, Marie Curie was a pioneer in the field of radioactivity, the only person honored with Nobel Prizes in two different sciences, and the first female professor at the University of Paris. Alan Turing “Science is a differential equation. English mathematician and logician, Turing is often considered to be the father of modern computer science. “An expert is a man who has made all the mistakes which can be made in a very narrow field.” Charles Darwin.
Stephen Wolfram: A New Kind of Science. Educational Resources. Unit Conversions. A Sense of Scale. By Glenn Elert Posted 01.08.08 NOVA At roughly minus 460°F, absolute zero is abysmally cold, yet at least we can imagine it.
Being only a few hundred degrees below zero, it's in the realm of something we can put our minds around. This is not true of the opposite of absolute zero, the theoretical highest possible temperature. In conventional physics, this is approximately 100 million million million million million degrees. In this interactive, get a taste of temperatures from absolute zero to absolute hot, and see why, for instance, even the core of the sun is relatively "chilly" compared to what many physicists believe the temperature of the universe was an instant after the Big Bang. Launch Interactive Travel from absolute zero to what may be the highest temperature of all. This feature originally appeared on the site for the NOVA program Absolute Zero.
Glenn Elert is Research Coordinator and Webmaster for the Physical Science Department of Midwood High School at Brooklyn College. Images. GL-07 Store Glacier. Superfluid - a Tech & Science video. MIT Researcher Mimics Photosynthesis To Turn Water Into Hydrogen And Oxygen. Inner Workings of Cells. Cell Biology. Chemistry Tutorials & Drills. Mitosis Donut. Stream of Protoplasm in Plant Cells. Biolab: The Virus (v2) My Brilliant Brain 2of3 Accidental genius - the thinking cap !
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