How are environmental chemicals affecting vultures? 

Vultures are long-lived birds, and because they are scavengers, they're vulnerable to chronic chemical exposure through the food chain. An article published in Environmental Toxicology and Chemistry reviews the primary ...

Exploring wildlife's 'worm-wide web'

Many of us try to repress the thought of them, while others have come to accept them. Whatever your take on parasites is, they can tell scientists a lot about ecology, health and the environment.

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Transmission (medicine)

In medicine, transmission is the passing of a disease from an infected individual or group to a previously uninfected individual or group. The microorganisms (bacteria and viruses) that cause disease may be transmitted from one person to another by one or more of the following means:

Microorganisms vary widely in the length of time that they can survive outside the human body, and so vary in how they are transmitted.

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