pnas.org

vPwbR TIL that a study shows wearing a mask decreased the quality of chess players’ decisions—a measure of their cognitive performance. However, the disruptive effect of masks is relatively short-lived, gradually weakening so that there is no measurable disadvantage after roughly 4 hours of play.
0d0kv TIL there are more atoms in a single human cell than there are cells in the average human body (~100 trillion atoms vs ~33 trillion cells).
78LyM TIL that fish eggs can survive after passing through a waterfowl's digestive system. This provides a good explanation of how fish can populate closed bodies of water like lakes