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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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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

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There are more nerve cells in one human brain than there are stars in the Milky Way.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Chemical similarities between oxidation and synthesis of a fatty acid Chemical similarities between oxidation and synthesis of a fatty acid
The chemical structure of the water molecule facilitates life The chemical structure of the water molecule facilitates life
The energy budget The energy budget
La Niña events store energy La Niña events store energy
Energy Balance and Imbalances Energy Balance and Imbalances
The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ... The enthalpy change for converting 10.0 g of ice at -25.0 C to water at 80.0 C is ________ kJ. ...
Video: Chemical Messengers Animation

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