The horizontal fraction bar was introduced by the Arabs.
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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
Some male birds and mammals congregate in communal courting grounds called leks.
Climate Change
Climate Change
Recent Climate Change
Climate Change: Volcanoes Timescale
A nerve cell (neuron) has extensions called dendrites