…Congress is not a court, and no rules of evidence apply to its activities, including impeachment. This is not a technical distinction: It’s a foundational part of the constitutional structure.
https://theconversation.com/why-hearsay-isnt-a-problem-for-congress-in-impeachment-hearings-127164

Despite the significance modern humans have ascribed to variations in phenotype, race is a culturally defined category and not a scientific one. argues Joseph L. Graves, professor of biological sciences at the Joint School of Nanoscience and Nanoengineering.. "Everything we know about our genetics has proven that we are far more alike than we are different. If more people understood that, it would be easier to debunk the myth that people of a certain race are ‘naturally’ one way or another,” or that refugees and asylum seekers are dangerous others instead of just like every other human who has moved around the world over the last 200,000 years.
http://www.openculture.com/2019/11/how-humans-migrated-across-the-globe-over-200000-years-an-animated-look.html

If you like handling tiny glass shards, sure, go ahead and touch the lunar surface. But avoid the rocks.

https://www.nytimes.com/2019/11/12/science/randall-munroe-moon.html