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  2. Percentage - Wikipedia

    en.wikipedia.org/wiki/Percentage

    The percent value can also be found by multiplying first instead of later, so in this example, the 50 would be multiplied by 100 to give 5,000, and this result would be divided by 1,250 to give 4%. To calculate a percentage of a percentage, convert both percentages to fractions of 100, or to decimals, and multiply them. For example, 50% of 40% is:

  3. Asteroid impact avoidance - Wikipedia

    en.wikipedia.org/wiki/Asteroid_impact_avoidance

    In April 2018, the B612 Foundation reported "It's 100 percent certain we'll be hit by a devastating asteroid, but we're not 100 percent sure when." [ 3 ] Also in 2018, physicist Stephen Hawking , in his final book, Brief Answers to the Big Questions , considered an asteroid collision to be the biggest threat to the planet.

  4. Mohammad Reza Pahlavi - Wikipedia

    en.wikipedia.org/wiki/Mohammad_Reza_Pahlavi

    The extent of urbanization rose from 31 percent in 1956 to 49 percent in 1978. By the mid-1970s Iran's national debt was paid off, turning the nation from a debtor to a creditor nation. The balances on the nation's account for the 1959–78 period actually resulted in a surplus of funds of approximately $15.17 billion.

  5. Chernobyl disaster - Wikipedia

    en.wikipedia.org/wiki/Chernobyl_disaster

    It is unclear how long the ceramic form will retard the release of radioactivity. From 1997 to 2002, a series of published papers suggested that the self-irradiation of the lava would convert all 1,200 tonnes (1,200 long tons; 1,300 short tons) into a submicrometre and mobile powder within a few weeks. [109]

  6. History of life - Wikipedia

    en.wikipedia.org/wiki/History_of_life

    The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...

  7. List of common misconceptions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_misconceptions

    True photographic memory (the ability to remember endless images, particularly pages or numbers, with such a high degree of precision that the image mimics a photo) has never been demonstrated to exist in any individual, although a small number of young children have eidetic memory, where they can recall an object with high precision for a few ...

  8. History of the Internet - Wikipedia

    en.wikipedia.org/wiki/History_of_the_Internet

    The history of the Internet originated in the efforts of scientists and engineers to build and interconnect computer networks.The Internet Protocol Suite, the set of rules used to communicate between networks and devices on the Internet, arose from research and development in the United States and involved international collaboration, particularly with researchers in the United Kingdom and France.

  9. Islam in the United States - Wikipedia

    en.wikipedia.org/wiki/Islam_in_the_United_States

    About 60 percent believed US Muslims were as patriotic as others, while 38 percent they were not. The study also found that a big majority of Americans - 74 percent - accepted there was "a lot" of bigotry against Muslims existed. Researchers also found that Republicans were more likely to hold negative perceptions of Muslims with 71 percent. [221]

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