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  Is Walking Enough Exercise?

  We humans need exercise to stay healthy. Exercise can prevent illness and early death. It also helps to keep the body mobile. Walking is a relaxing…

  BY Jacqueline

  6 Jan,2021

  Walking Sports Scientist Exercise

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  What Is the Optimal Size of A Network?

  According to the latest research of the US Army, the well-known Dunbar number theory holds true, that is, a network with no more than 150 members w…

  BY Evelyn

  15 Dec,2020

  Network ARO Dunbar Size

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  How Many People can Earth Hold?

  Thomas Malthus, a philosopher in the late 18th century, wrote this in his article: “The burden of population has far exceeded the carrying capacity…

  BY Timothy

  3 Dec,2020

  Earth People

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  New Research has Found ：The Earth’s Core is Only a Billion Years Old

  New research has found that the solid inner core at the centre of the Earth is only a billion years old. The modern Earth is like a layer cake, wit…

  BY Deborah

  1 Dec,2020

  Earth Natural

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  Lost humpback whale abandoned by friends in croc-infested river in Australia

  A humpback whale is swimming the wrong way up an alligator-filled river in Australia's Northern Territory, according to media reports. The lost wha…

  BY Maria

  25 Nov,2020

  Humpback Croc

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  Scientists who Discovered the “Parenting Instinct”

  Catherine Dulac, a Neurobiologist at Harvard University, has long been fascinated by the instinctive motion of creatures to nurture their young bab…

  BY Annie

  20 Nov,2020

  Nobel Prize

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  Discovery of a 100 years old photograph of the Antarctic

  Conservationists who were rebuilding an Antarctic adventure cabin had a shocking discovery: a small box with 22 developed negatives had been stuck …

  BY Phyllis

  20 Nov,2020

  Antarctic Photograph

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  Burpee: Excellent Whole-Part Training

  The Seals trusted it. Weightlifters and Spartan Race competitors practiced it hundreds of times. Even the Hall of Fame player Jerry Rice would use …

  BY Marilyn

  15 Nov,2020

  Burpee Sports

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  Why is space vacuumed?

  Space is an almost a perfect vacuum, full of holes in the universe. Simply speaking, it is because of gravity. But to better understand the vacuum …

  BY Christina

  12 Nov,2020

  NASA Vacuumed

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  What is the ultimate speed of sound transmission?

  Einstein’s special theory of relativity points out the cosmic speed limit - the speed of light in a vacuum for us. But sound travels through a medi…

  BY Christine，Einstein

  10 Nov,2020

  Sound Transmission

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