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Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Classification of life histories based on juvenile survival, fecundity, and age at reproductive matu Classification of life histories based on juvenile survival, fecundity, and age at reproductive matu
A juvenile blue whale with its mother A juvenile blue whale with its mother
A juvenile and a female torrent duck on the Urubamba River, Peru A juvenile and a female torrent duck on the Urubamba River, Peru
Juvenile buzzard being weighed for research Juvenile buzzard being weighed for research
Video: Facilitated Diffusion - Glucose transport

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