› added 11 years ago

87

TIL excessive mouth breathing can cause crooked teeth and abnormal facial growth.

Read more m.wikipedia.org

via reddit.com

GAk5G TIL that dogs intentionally try to make humans laugh. They understand that laughter means play, and play is positive.
neYXB TIL that the common method for a spacecraft to shift between two orbits is called a Hohmann Transfer, and that the guy who calculated it (in 1925) was inspired by a science fiction book written in 1897, which gave a generally correct explanation of the concept of orbit trajectory
DQBwJ TIL New Zealand sea lions move up to 2 kilometres (1.2 mi) inland, from beach to tall grasses, and into forests.
RAZl TIL The “Black Death” plague (Yersinia pestis) still exists in the US (1–17 reported cases per year).
o4Q8 TIL: American Indians born in Canada (with at least 50% American Indian blood) cannot be denied admission to the United States and have a special category where they can apply for permanent residence to the US with no other qualifications.