nhpr.org

9wLNX TIL Blue Whales' heart beats have been recorded as low as one beat every two minutes - the lowest for any mammal
xVWE5 TIL that introduction of iodized salt in 1920s increased national IQ average by 3.5 points in a decade and in certain states which had high levels of iodine deficiency previously, saw avg IQ increase as much as 15 points within the first decade.
D1jgY TIL that M&M's are made with natural colouring in the EU but not in the US.