Reading about Chicxulub crater (aka. "dinosaur killer") on wikipedia (as one does), I was surprised that connecting the crater to K–Pg boundary happened much more recent than I thought. Crater was discovered in 1981; linking it to K–Pg boundary happened in 1991.
Other things that happened in 1991: Gulf war and collapse of USSR. These are not "current events" to be sure, but it still is much more recent than I thought.
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