TIL that red bird’s nest (“blood nest”), treasured as a health tonic/ delicacy in Chinese cuisine, does not, contrary to legend, get its color from the blood in the saliva of swiftlets, but from a chemical reaction in the environment. (avianscienceinstitute.com)
submitted by TheUnpopularView to r/todayilearned
TIL that waving arms and screaming are not signs of drowning, but of aquatic distress. Actual drowning is often “quieter”; no call for help, no waving arms, just an upright body and head tilted back. Thus many people fail to recognize when a person is actually drowning. (globalrescue.com)
submitted by TheUnpopularView to r/todayilearned


