› added 4 months ago

22

TIL that individuals who have even one psychotic episode after cannabis use have a 47% conversion rate to schizophrenia or bipolar disorder

Read more pubmed.ncbi.nlm.nih.gov

via reddit.com

j6VMX TIL: In China wearing a green hat is a sign of mockery and telling someone they wear a green hat is an insult. This signifies that the person is a cuck. One reason is that during the Yuen dynasty, family members of prostitutes had to wear green headscarves so the public can identify and avoid them.
oRABY TIL it used to be believed that babies as old as 15 months couldn't feel pain. As a result, doctors would preform surgery without anesthesia. Doctors used muscle relaxants on the infants to prevent squirming, essentially paralyzing the babies for the duration of the procedure.
9bdQ TIL that the windshield of the SR-71 Blackbird can reach a temperature of over 600°F during flights at mach 3. It had to be made of quartz and was ultrasonically fused to the titanium hull in order to handle the stress.
OonWR TIL in 3 years (2011-2013) China used more cement than the US in whole 20th century
Nbwb TIL that a retired Major General suggested in 1935 that wars could be avoided by drafting the upper class before the rest.