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EntertainmentCowardly or brave are caused by hormones
Scientists believe that some people are born to be heroes, because their bodies have fewer hormones that make them feel more stressed than most of us.Women are more brave if breastfeeding
When threatened, the bravery level of nursing mothers is greater than that of nursing mothers or unborn babies.
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One of the loneliest species on Earth, living 2,800m underground and surviving on radioactive energy
The meaning of Christmas tree lighting ceremony
Earth's inner core is 'deforming' discovered
5 special objects on the NASA robot that landed on Mars
Woolly mammoths turned out to be a staple diet for prehistoric North Americans
Can humans travel forward or backward in time?
Finding the mysterious 'monster' that is making the universe expand
How long is the flight to the Moon?
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