Parks Sabers - The Most Powerful Sabers In The Known Universe. How to Build the CMoy Pocket Amplifier - StumbleUpon. 11 cheap gifts guaranteed to impress science geeks. Science comes up with a lot of awesome stuff, and you don't need a Ph.D, a secret lab, or government funding to get your hands on some of the coolest discoveries.
We've got a list of 11 mostly affordable gifts that are guaranteed to blow your mind, whether or not you're a science geek. Click on any image to see it enlarged. 1. Aerogel Also known as frozen smoke, Aerogel is the world's lowest density solid, clocking in at 96% air. Aerogel isn't just neat, it's useful. Price: $35 2.
Inside these sealed glass balls live shrimp, algae, and bacteria, all swimming around in filtered seawater. EcoSpheres came out of research looking at ways to develop self-contained ecosystems for long duration space travel. Price: $80 3. NASA has been trying to figure out how to get a sample of rock back from Mars for a while now. Every once in a while, a meteorite smashes into Mars hard enough to eject some rocks out into orbit around the sun. Price: $70+ 4. Price: $150 5. Price: $110 6. Price: $80 7. Price: $15. Electronic Projects For Beginners. I made a guide for those people who are still starting with their electronics hobby.
I started connecting wires, batteries, bulbs, buzzers and motors when I was 4 years old . Now that I am 13 years old, I now have a good amount of experience to build complicated electronic circuits. Learning electronics isn't that easy but if you put love and passion to it, I assure you that you would enjoy building your own experiments. Scirus - for scientific information - StumbleUpon. - StumbleUpon. The Ultimate Movie Drinking Game List! Chronology of Events in Science, Mathematics, and Technology - StumbleUpon.
Imaginary Foundation Imaginary Foundation. Examples of Beneficial Mutations and Natural Selection. Examples of Beneficial Mutations and Natural Selectionfrom The Evolution Evidence Page Scientists have shown that beneficial mutations do occur to produce brand new alleles (variants of genes) that improve an organism's chances of survival in a particular environment.
Natural selection has been demonstrated to increase the frequency of these alleles in a population. The easiest way to demonstrate this is from experiments based upon lines of organisms developed from clones (genetically identical by definition) of a single individual. The following examples are from pages 183 - 186 the book "Selection - The Mechanism of Evolution" by Graham Bell, a book which I recommend highly to anyone who wants to learn more about evolution, especially if they like to see good evidence for the claims made for natural selection. I list the original references for some of these so that anyone who wants more details will know where to look. Home Evolving Proteins in Snakes from an article by P.Z. 1.) 2.)