The increase in relative risk for heart disease due to air pollution for an individual is small compared with the impact of the established cardiovascular ... Popularity:
The noise problems of the past are incomparable with those plaguing modern society: the roar of aircraft, the thunder of heavily laden lorries and the ... Popularity:
Contaminated food or water caused many epidemics in earlier times. Even today some foods frequently contain bacteria that cause diarrhea. (For example, over 50% of ... Popularity:
Allergies are abnormal immune system reactions to things that are typically harmless to most people. When you're allergic to something, your immune system mistakenly believes ... Popularity:
The term "global warming" is a specific case of the more general term "climate change" (which can also refer to "global cooling," such as occurs ... Popularity:
The number of elk in the Yellowstone National Park region infected with scabies, a skin infestation caused by mites, is up this year, state wildlife ... Popularity:
Pollen is a fine powder produced by certain plants when they reproduce. During the spring, summer, and fall seasons, it's released into the air and ... Popularity:
Watersheds tend to concentrate mercury through erosion of mineral deposits and atmospheric deposition. Plants absorb mercury when wet but may emit it in dry air. ... Popularity:
Schistosomiasis is endemic in 76 tropical developing countries, and 600 million people are at risk for acquiring the disease. There are estimates that up to ... Popularity:
