The original sentence from National Graphics Magazines "Worlds Apart" by Timothy Ferris as following.
Some of these baleful accidents appear to have been caused by comets or asteroids colliding with Earth—most recently the impact, 65 million years ago, that killed off the dinosaurs and opened up opportunities for the distant ancestors of human beings.
The part where I'm having trouble with is : Most recently the impact, 65 million years ago, that killed off the dinosaurs and opened up opportunities for the distant ancestors of human beings.
I do not see how recently(adverb) and the impact(noun) fits together. I've been searching the net for quite some time with no satisfactory explanation. Here's hoping someone might answer me.
anonymous do not see how recently(adverb) and the impact(noun) fits together. They don't fit together more closely than in the sentence as a whole. these accidents were caused by asteroids colliding with Earth: most recently, the impact [= asteroid] that killed off the dinosaurs....
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anonymous do not see how recently(adverb) and the impact(noun) fits together.
They don't fit together more closely than in the sentence as a whole. Here is a simplified version:
...these accidents were caused by asteroids colliding with Earth: most recently, the impact [= asteroid] that killed off the dinosaurs....
I interpret the writer's meaning like this.
Some of these baleful accidents, most recently the impact, 65 million years ago, that killed off the dinosaurs and opened up opportunities for the distant ancestors of human beings, appear to have been caused by comets or asteroids colliding with Earth.