The NASA Mars rover Spirit has has a broken wheel, and this mishap is the cause of some fascinating new discoveries: …the rover has been driving backwards, dragging the lame wheel along. This May, scientists noticed a bright spot in the trail of overturned dirt. They turned Spirit around for a closer look, finding high […]
A new method of turning ordinary skin cells into powerful multipurpose cells without destroying embryos has cured its first patients — a group of mice with sickle cell anemia. They used cells from skin removed from the tails of the mice. By making multipurpose stem cells without using human eggs or embryos, the process avoids […]
From this website comes a great deal of information that is either over my head or beyond my attention span and this delicious little extract: One of the mysteries of the universe is why it should speak the language of mathematics. Numbers and the relationships between them are, after all, just abstract reasoning. Yet mathematics […]
‘Food Materials’ can be classified into the following categories: 1. Fuel Foods- [basically fats and starches]2. Foods for growth and Repair [meats, eggs, cheese and grains]3. Mineral Salts: Salts of iron, or lime, of sodium, and many others. They are found pretty well distributed thru all of our food, some foods being rich in one […]
These passages come from the textbook used in Tennessee public schools, indeed, selected by the Tennessee textbook committee for all state schools to use in 1919: At the present time there exist upon the earth five races or varieties of man, each very different from the other in instincts, social customs, and, to an extent, […]
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