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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of Massive amounts of wood are stored on the forest floor of old-growth temperate coniferous forests of
Portable pulse oximeter and digital probe Portable pulse oximeter and digital probe
A Hall-effect sensor produces a digital on-off voltage signal whether it is used with a blade or a ... A Hall-effect sensor produces a digital on-off voltage signal whether it is used with a blade or a ...
The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ... The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ...
Satellite Images Satellite Images
Estimates of carbon stored in the plants and soils of different ecosystems. Estimates of carbon stored in the plants and soils of different ecosystems.
Video: Conduction of action potentials

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