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  2. Acid rain - Wikipedia

    en.wikipedia.org/wiki/Acid_rain

    Effect of acid rain on statues Acid rain and weathering. Acid rain can damage buildings, historic monuments, and statues, especially those made of rocks, such as limestone and marble, that contain large amounts of calcium carbonate. Acids in the rain react with the calcium compounds in the stones to create gypsum, which then flakes off.

  3. Haunting before-and-after images of LA buildings razed to the ...

    www.aol.com/haunting-images-la-buildings-razed...

    Haunting before-and-after images of buildings, including a senior center, places of worship, and businesses, razed to the ground show the extent of the devastation caused by the wildfires in Los ...

  4. 6 dramatic before-and-after renovation photos of decaying ...

    www.aol.com/article/finance/2016/11/03/6...

    Since 1976 the HTC has leveraged over $78 billion to restore more than 41,270 buildings across the US. 6 dramatic before-and-after renovation photos of decaying buildings Skip to main content

  5. Black Triangle (region) - Wikipedia

    en.wikipedia.org/wiki/Black_Triangle_(region)

    Turów Power Station, a thermal power station in Bogatynia, Poland Effects of acid rain in the Jizera Mountains in 2006. The Black Triangle (German: Schwarzes Dreieck, Lower Sorbian: Carny tsirozk, Upper Sorbian: Čorny trirózk) is the border region between Germany, Poland and the Czech Republic, long characterized by extremely high levels of pollution.

  6. Weathering - Wikipedia

    en.wikipedia.org/wiki/Weathering

    Concrete damaged by acid rain. Buildings made of any stone, brick or concrete are susceptible to the same weathering agents as any exposed rock surface. Also statues, monuments and ornamental stonework can be badly damaged by natural weathering processes. This is accelerated in areas severely affected by acid rain. [53]

  7. NASA's before and after images show Earth's changing ... - AOL

    www.aol.com/news/nasas-images-show-earths...

    The Images of Change project provides side-by-side photos of the same place over time to document the environment changes caused by nature and man. NASA's before and after images show Earth's ...

  8. Concrete degradation - Wikipedia

    en.wikipedia.org/wiki/Concrete_degradation

    After sufficient setting and hardening of concrete (after 28 days), the progressive loss of capillary water is also responsible for the "drying shrinkage". It is a continuous and long-term process occurring later during the concrete life when under dry conditions the larger pores of concrete are no longer completely saturated by water.

  9. Freshwater acidification - Wikipedia

    en.wikipedia.org/wiki/Freshwater_acidification

    Diagram depicting the sources and cycles of acid rain precipitation. Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide), or by the reduction of acid anions, like sulfate and nitrate within a lake, pond, or reservoir. [1]