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.
Did you know?
Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.
Did you know?
Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
Open-Cake Surgery
In the Tai Forest a female chimp demonstrates a skill once thought to be unique to humans. Here she
A thermostat stuck in the open position caused the engine to operate too cold. The vehicle failed ...
Hold baby’s hands and (A) cross arms over chest and then (B) open out to the sides. Repeat several ...
How to choose the correct u and dv when you integrate by parts
As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ...