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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Juvenile Mediterranean House Gecko (H. turcicus) Juvenile Mediterranean House Gecko (H. turcicus)
Remedies for insomnia include increased physical exercise and time spent outdoors. Remedies for insomnia include increased physical exercise and time spent outdoors.
L-carnitine is a popular dietary supplement. Notice the claims of improving athletic performance and ... L-carnitine is a popular dietary supplement. Notice the claims of improving athletic performance and ...
The most commonly used socket drive sizes include 1/4, 3/8, and 1/2 inch drives. The most commonly used socket drive sizes include 1/4, 3/8, and 1/2 inch drives.
The male physique depicted in popular action figures in the 1970s The male physique depicted in popular action figures in the 1970s
Video: Power Supply Polyacrylamide Gel Protein Sample

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