A disease is any condition which results in the disorder of a structure or function in a living organism that is not due to any external injury. The study of disease is called pathology, which includes the study of cause. Disease is often construed as a medical condition associated with specific symptoms and signs. It may be caused by external factors such as pathogens or by internal dysfunctions, particularly of the immune system, such as an immunodeficiency, or by a hypersensitivity, including allergies and autoimmunity.
The horseman on the white horse was clad in a showy and barbarous attire. [...] While his horse continued galloping, he was bending his bow in order to spread pestilence abroad. At his back swung the brass quiver filled with poisoned arrows, containing the germs of all diseases.
Vicente Blasco Ibáñez, The Four Horsemen of the Apocalypse (1916), (ch V).
Warming brought on by climate change is causing the icebergs in the Antarctic to drift towards the shore and cause fundamental damage to the rich sea bed ecosystem. The icebergs are scouring the sea floor as they drift close to shore of the west Antarctic Peninsula (WAP). This movement is fundamentally altering the rich sea bed ecosystem.
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