During one of three private campaign receptions in New York City on Wednesday‚ President Joe Biden took a moment to warn a crowd of a major threat facing America: Donald Trump. Earlier in his speech‚ Biden told the crowd that the biggest existential threat to the world is the environment. “There is only one existential threat we face in the world. That’s the environment. I mean it literally is the existential threat‚” he said. “It’s even more consequential than nuclear power ―...