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Several researchers also said that they found Kennedy’s insistence that autism stems from exposure to an undetermined environmental source perplexing.

"It is a little perplexing that this wouldn't have been predicted," she said.

Nauman, at a tumultuous and perplexing period of upheaval politically, socially and artistically, was getting down to basics.

But what about the perplexing strength of the vote Trump received in urban America and among young people and those with college educations, especially among white voters?

Chicago fired Matt Eberflus on Nov. 29, one day after a 23-20 loss to the Detroit Lions that concluded with perplexing clock mismanagement by the coach and his quarterback.