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  2. Timeline of historic inventions - Wikipedia

    en.wikipedia.org/.../Timeline_of_historic_inventions

    The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...

  3. Category:21st-century inventions - Wikipedia

    en.wikipedia.org/wiki/Category:21st-century...

    20th; 21st; 22nd; 23rd; 24th; 25th; 26th; Subcategories. This category has only the following subcategory. ... Pages in category "21st-century inventions" The ...

  4. The New York Times' 100 Best Books of the 21st Century

    en.wikipedia.org/wiki/The_New_York_Times'_100...

    The New York Times' 100 Best Books of the 21st Century is a ranked list of the 100 best novels published in the English language since January 1, 2000. Selection criteria [ edit ]

  5. Category:20th-century inventions - Wikipedia

    en.wikipedia.org/wiki/Category:20th-century...

    20th; 21st; 22nd; 23rd; 24th; 25th; ... Pages in category "20th-century inventions" The following 128 pages are in this category, out of 128 total. ... World Wide Web;

  6. Key events of the 20th century - Wikipedia

    en.wikipedia.org/wiki/Key_events_of_the_20th_century

    The 20th century changed the world in unprecedented ways. The World Wars sparked tension between countries and led to the creation of atomic bombs, the Cold War led to the Space Race and the creation of space-based rockets, and the World Wide Web was created.

  7. 20th century in science - Wikipedia

    en.wikipedia.org/wiki/20th_century_in_science

    The increase of 25% CO2 expected by the end of the century therefore corresponds to an increase of 0.6°C in the world temperature – an amount somewhat greater than the climatic variation of recent centuries. – John Sawyer, 1972. The mainstream news media at the time exaggerated the warnings of the minority who expected imminent cooling.

  8. Modern Times: A History of the World from the 1920s to the ...

    en.wikipedia.org/wiki/Modern_Times:_A_History_of...

    Johnson describes world history beginning with the aftermath of World War I, and ending with the collapse of Communism in Eastern Europe.. In the first part of the book, Johnson deals mainly with the shaping of the Soviet Union in the first decades after World War I, the collapse of democracy in Central Europe due to the rise of Fascism and National Socialism, the causes that led to World War ...

  9. List of multiple discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_multiple_discoveries

    The algorithm is considered one of the most important developments in numerical linear algebra of the 20th century. [96] 1960s: Kolmogorov complexity, also known as "Kolmogorov–Chaitin complexity", descriptive complexity, etc., of an object such as a piece of text is a measure of the computational resources needed to specify the object.

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