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Tag: Pennsylvania

The Exception to Bergmann’s Rule

Since 1971, researchers in California have been collecting data on birds’ bodies and wingspans and have discovered that the birds have been growing in size. These research findings seem to be an exception to Bergmann’s Rule, which is unusual when compared with similar studies throughout the United States and even Europe.

Is the World Running Out of Clean Water?

With the world’s population approaching 7 billion people, we are encountering a threat of a lack of clean drinking water. Now is the time to start conserving water and considering processes to alleviate the lack of clean drinking water.

Cities with Worst Air Pollution (Top 10 List)

The American Lung Association (ALA) recently released State of the Air 2011, its annual report on air pollution and which cities have got the worst. In total, 18.5 million Americans live in regions with unhealthy levels of year-round particle pollution.

According to the ALA, 13,000 Americans a year are killed from particle pollution from power plants alone.

And for people in “at-risk” groups, like people who already have asthma, chronic lung disease, cardiovascular disease, or diabetes, the hazards of such pollution are even greater.