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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Major types of microbial cell aggregations found in phylum Cyanobacteria. Major types of microbial cell aggregations found in phylum Cyanobacteria.
The calcaneus spur found on the male's hind limb is used to deliver venom. The calcaneus spur found on the male's hind limb is used to deliver venom.
The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera. The insect family Coenagrionidae is found in the order Odonata and the suborder Zygoptera.
The Red-bearded Bee-eater Nyctyornis amictus is a large species of bee-eater found in the Indo-Malay The Red-bearded Bee-eater Nyctyornis amictus is a large species of bee-eater found in the Indo-Malay
Intercalated disc Intercalated disc
An embedded particle of something was found on one of the gears, making this pump worthless except ... An embedded particle of something was found on one of the gears, making this pump worthless except ...
Video: Dietary Cholesterol & LDL

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