Did you know?
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Did you know?
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Did you know?
A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
Did you know?
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The structure of a typical flower.
Spectra of a Metal-Poor and a Metal-Rich Star
Typical hand deformities associated with rheumatoid arthritis.
A cutaway view of a typical two-stage turbine electric fuel pump.
Typical laboratory emergency shower.
A typical reaction in which NAD+ acts as an oxidizing agent