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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 ...
Dr. Sabin Arnold von Sochocky (1883–1928) was an inventor of the luminescent paint (used for clocks in early 20th century) based on radioactive radium (previously discovered by Pierre and Marie Curie). He was a founder of the United States Radium Corporation where some of its workers died from radium poisoning.
Pages in category "20th-century inventions" The following 128 pages are in this category, out of 128 total. This list may not reflect recent changes. A.
5. Play-Doh. Who: Kay Zufall, Brian, Joseph McVicker, Bill Rhodenbaugh When: 1956 . How it was created: The gooey toy kids have been playing with for decades began as a household cleaning product ...
From the first Apple computer to the COVID-19 vaccine, here are the most revolutionary inventions that were born in the U.S.A. in the past half-century.
The structure of DNA was determined in 1953 by James Watson, [3] [4] Francis Crick, [3] [4] Rosalind Franklin [4] and Maurice Wilkins, [3] [4] following by developing techniques which allow to read DNA sequences and culminating in starting the Human Genome Project (not finished in the 20th century) and cloning the first mammal in 1996.
The past can be quite fascinating.Those of us living in the present find it really interesting what life was like 50, 100, or even a 1,000 years ago. Luckily, we can go almost 200 years to the ...
July 10: At least 218 people are killed, about 700 are missing and presumed dead, and about 800 shanties are buried in a collapse of a dumpsite, destabilized by torrential rains caused by tropical cyclones, in Payatas, Quezon City.