Gerontology & Geriatrics

Ageism and health: Study shows close links

Nearly all older adults have experienced some form of ageism in their everyday lives, a new study finds—whether it's seeing ageist messages and images on television or the internet, encountering people who imply that they're ...

Diseases, Conditions, Syndromes

Americans ease up on masks, virus safeguards: AP-NORC poll

Many Americans have taken significant steps back from once-routine coronavirus precautions, with less than half now saying they regularly wear face masks, avoid crowds and skip nonessential travel.

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Pollution

Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the elements of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or nonpoint source pollution. The Blacksmith Institute issues an annual list of the world's worst polluted places. In the 2007 issues the ten top nominees are located in Azerbaijan, China, India, Peru, Russia, Ukraine and Zambia.

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