interactives to learn more about DNATalking Glossary of Genetic terms
can dowload an appAnimated Genome video
animated videos of cell
Time line of human genome
DNA--unlocking life's code
Interactives and additional information about DNA from the Smithsonian's National Museum of Natural Historyhuman reproduction resources about puberty and sex
Mechanisms that increase Genetic Variation
6 minGenetics song video
17min videoBiological Inheritance--Bill Nye (greatest science)
19min videoPunnett Squares
10 minGenotypes and Phenotypes
10min videoGenotype Expression
3:41 minLinked Genes
17 min videoCentral Dogma and Transcription
9minDNA and RNA part 2
What is DNA?
10minDNA and RNA part 1
Pedigrees and Genetics
http://www.youtube.com/watch?v=ZL1T5IzhgtI 14 minto go with chapter 7Gene Linkage video (14 min)Injury and Recovery
from 2014 olympicsCells
12 min videoImages from ISS timelapsed of Earth
Man (or woman) can only dream what it looks like hovering above earth watching the beauty of science orbit beneath them. Thanks to the ISS (International Space Station) we have the next best thing, a timelapse. “Some interesting tidbits about the ISS. It orbits the planet about once every 90 mins and is about 350 Km/217 miles. The yellow/greenish line that you see over the earth is Airgolw.
Airglow is caused by various processes in the upper atmosphere, such as the recombination of ions which were photoionized by the sun during the day, luminescence caused by cosmic rays striking the upper atmosphere, and chemiluminescence caused mainly by oxygen and nitrogen reacting with hydroxyl ions at heights of a few hundred kilometers. It is not noticeable during the daytime because of the scattered light from the Sun.
Even at the best ground-based observatories, airglow limits the sensitivity of telescopes at visible wavelengths. Partly for this reason, space-based telescopes such as the Hubble Space Telescope can observe much fainter objects than current ground-based telescopes at visible wavelengths.
The airglow at night may be bright enough to be noticed by an observer, and is generally bluish green in color. Although airglow emission is fairly uniform across the atmosphere, to an observer on the ground it appears brightest at about 10 degrees above the horizon, because the lower one looks the greater the depth of atmosphere one is looking through. Very low down, however, atmospheric extinction reduces the apparent brightness of the airglow.
One airglow mechanism is when an atom of nitrogen combines with an atom of oxygen to form a molecule of nitric oxide (NO). In the process a photon is emitted. This photon may have any of several different wavelengths characteristic of nitric oxide molecules. The free atoms are available for this process because molecules of nitrogen (N2) and oxygen (O2) are dissociated by solar energy in the upper reaches of the atmosphere, and may encounter each other to form NO.