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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
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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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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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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
A fixed action pattern elicited by a sign stimulus.
Reindeer antlers grow again each year under a layer of fur called velvet. This reindeer is losing th
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Water Loss Through Evaporation
CT imaging of glioblastoma in a 6-year-old girl.
Invasive species and the biodiversity loss