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Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Southern Royal Albatross, Diomedea epomophora, is a large seabird from the albatross family. Southern Royal Albatross, Diomedea epomophora, is a large seabird from the albatross family.
The Very Large Array (VLA) The Very Large Array (VLA)
Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called Earth’s history is divided into nested sets of time--eons, eras, periods, and epochs--and is called
Reduction of the carbonyl group on a sugar Reduction of the carbonyl group on a sugar
Deoxynucleotides (top) have an OH group at the position in the deoxyribose molecule Deoxynucleotides (top) have an OH group at the position in the deoxyribose molecule
High in the Andes, a scientist measures the stride of a carnivorous dinosaur High in the Andes, a scientist measures the stride of a carnivorous dinosaur
Video: Dendrite Animation

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