When I googled “public domain Little Red Hen”, and selected “Images of the Little Red Hen”, I chose this picture. Occasionally, when we four were children, our mother, Regena Larrabee Seehausen, would ask us to do something when it was our choice not to do the task, and we refused. She said, “Well, I’ll do it myself said the Little Red Hen.” I don’t remember any dire consequences, of our refusal, just the attitude of independence.
Category Archives: Education
An Online Course by Coursera
This is an introductory page for a Coursera online course for interested people. An email message contained direct access to several free courses online, one of which was this one entitled Metadata, taught by Jeffrey Pomeranz of the University of North Carolina at Chapel Hill. It will begin on July 14, 2014, will last for eight weeks, and requires about six hours of work per week with readings. I am definitely interested in participating in this course.
Metadata is aggregated data. According to the course introduction, we are all familiar with it.
Theoretically, anybody with access to a computer can get a free college education online, though I have not heard of it. It may be that some personal connections are needed for it to really work well.
Carbon Dioxide from Methane
A model of a methane molecule and two oxygen molecules, the reactants when we burn methane (natural gas) in air. The methane molecules is made of one carbon atom (black) and four hydrogen atoms (white). Methane is a hydrocarbo. It is also a fossil fuel. The element oxygen occurs in the atmosphere as two oxygen atoms (red) combined into a molecule. When the methane burns, the above reactants become rearranged into the products below, with the release of energy.
These are the products formed, carbon dioxide and water, when methane burns in oxygen. The leftmost molecule is carbon dioxide, made up of one carbon atom (black) and two oxygen atoms (red). Each of the two water molecules is made up of two hydrogen atoms and one oxygen atom. Carbon dioxide is the greenhouse gas which is put into the atmosphere when methane, or any fossil fuel is burned. This is the source of our global warming.