› added 7 years ago

315

TIL that labs working with level 4 biohazards such as Ebola, maintain a negative air pressure. This assures that in the case of a leak, clean air will flow into the lab, rather than possibly contaminated air flowing out.

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1opO TIL part of the 18 disciplines of ninjutsu (ninja) was the study of meteorology and geography.
yQwDl TIL about the Xoloitzcuintli (pronounced "show-low-eats-QUEENT-lee"), a 3,000-year-old dog breed native to Mexico. Ancient Aztecs named the breed for their dog-headed god Xolotl, and mentions of these “strange hairless dogs” appear in the journals of Columbus and other European explorers.
WkDB9 TIL dragonflies spend several years as aquatic nymphs (one to four years), while the winged adult stage last any where from a few days to a few weeks, with six months being the exception for some species.
WkKZN TIL that Elephants can hear through both their ears and feet. Through special fat pads called digital cushions, they can hear sounds other elephants vocalize below the range of human hearing from many miles away. This helps warn them of far off danger, incoming floods, and rival elephants.
9YRWB TIL that snails leave behind dotted trails. I discovered this after observing a snail on my back porch which left its trail. After researching it; it turns out they lift up their bodies when they move. Slugs are the ones that leave lines.