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207

TIL that after Whitehead and Russell proved that 1+1=2 in Principia Mathematica, they commented that it was “occasionally useful”

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l7Ey5 TIL of ant-fungus mutualism. Leafcutter ants cut leaves and transport them back to their nests, where the leaves are used to cultivate fungus which is used as a food crop. In some advanced genera the queen ant may take a pellet of the fungus with her when she leaves to start a new colony.
01nL TIL that despite all the waste spewed into the Ganges, bacteriophages act as a “disinfectant,” devouring on organic materials and bacteria and killing them within 30 min of introduction to the river. This self-purifying quality leads to oxygen levels 25 times higher than any other river in the world
oRvVY TIL that the US military controls 22.4% of all the land in O'ahu, Hawaii (85,718 acres out of 382,148 acres)
NXyG8 TIL that the Cuvier's beaked whale has the deepest and longest recorded dives of any mammal, having been measured at 2,992 m (9,816 ft) and 222 minutes.
JYZXB TIL about the door-in-the-face. An attempt is made to convince the respondent to comply by making a large request that the respondent will most likely turn down. The respondent is then more likely to agree to a second, more reasonable request, than if that same request is made in isolation.