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  2. Deforestation of the Amazon rainforest - Wikipedia

    en.wikipedia.org/wiki/Deforestation_of_the...

    The National Institute for Space Research (INPE) in Brazil estimated that at least 7,747 km 2 (2,991 sq mi) of the Brazilian Amazon rainforest were cleared during the first half of 2019. [63] INPE subsequently reported that deforestation in the Brazilian Amazon reached a 12-year high between August 2019 and July 2020.

  3. Ray Kurzweil - Wikipedia

    en.wikipedia.org/wiki/Ray_Kurzweil

    Raymond Kurzweil ( / ˈkɜːrzwaɪl /, KURZ-wyle; born February 12, 1948) is an American computer scientist, author, inventor, and futurist. He is involved in fields such as optical character recognition (OCR), text-to-speech synthesis, speech recognition technology and electronic keyboard instruments. He has written books on health technology ...

  4. Arizona - Wikipedia

    en.wikipedia.org/wiki/Arizona

    Arizona is the sixth largest state by area, ranked after New Mexico and before Nevada. Of the state's 113,998 square miles (295,000 km 2 ), approximately 15% is privately owned. The remaining area is public forest and parkland, state trust land and Native American reservations.

  5. Geneva - Wikipedia

    en.wikipedia.org/wiki/Geneva

    As of 2000, children and teenagers (0–19 years old) made up 18.2% of the population, while adults (20–64 years old) made up 65.8% and seniors (over 64 years old) make up 16%. [55] As of 2000 [update] , there were 78,666 people who were single and never married in the municipality.

  6. ISBN - Wikipedia

    en.wikipedia.org/wiki/ISBN

    20 1-01-xxxxxx-x 1-05-xxxxxx-x 1-02-xxxxxx-x 1-05-xxxxxx-x 3 23 5 digits ... Amazon Kindle, and PDF formats of a particular book will have its own specific ISBN. They ...

  7. High-energy X-rays - Wikipedia

    en.wikipedia.org/wiki/High-energy_X-rays

    High-energy X-rays. High-energy X-rays or HEX-rays are very hard X-rays, with typical energies of 80–1000 keV (1 MeV), about one order of magnitude higher than conventional X-rays used for X-ray crystallography (and well into gamma-ray energies over 120 keV). They are produced at modern synchrotron radiation sources such as the Cornell High ...