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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.
Asthma cases in Americans are about 75% higher today than they were in 1980.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.