Did you know?
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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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
The Meselson-Stahl Experiment p1
The Redi experiment.
Pavlov’s Salivary Conditioning Experiment (1 of 2)
The Experiment at Robbers Cave
In a Millikan experiment, a 6.89E-14 kg charged oil droplet is suspended in the electric field ...
Find an equation of the tangent line to the graph of f(x) = sqrt(x) / (x+1) at the point x=1