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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

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

A marine food web in action: feeding baleen whales and birds. A marine food web in action: feeding baleen whales and birds.
Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another. Wild chimpanzees make and use simple tools to obtain food, learning tool making from one another.
Food: Made Over Made Better Food: Made Over Made Better
Thanks to agricultural advances, the world’s farmers can grow plenty of food Thanks to agricultural advances, the world’s farmers can grow plenty of food
Factors in Food Security Factors in Food Security
Is It Safe To Get Your Meals from a Food Truck? Is It Safe To Get Your Meals from a Food Truck?
Video: Atrophy

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