Here is some of the answer from Paul Krugman's column (NY Times).
No doubt Donald Trump hates environmental protection in part for the usual reasons. But there’s an extra layer of venom to his pro-pollution stances that is both personal and mind-bogglingly petty.
For example, he has repeatedly denounced restrictions intended to protect the ozone layer — one of the great success stories of global environmental policy — because, he claims, they’re the reason his hair spray doesn’t work as well as it used to.* I am not making this up.
He’s also a bitter foe of wind power. He likes to talk about how wind turbines kill birds, which they sometimes do, but no more so than tall buildings; but his real motivation seems to be ire over unsuccessful attempts to block an offshore wind farm near one of his British golf courses.
And if evidence gets in the way of his self-centeredness, never mind. Recently he assured audiences that there isn’t a drought in California, that officials have just refused to turn on the water.
I know how ridiculous it sounds. Can the planet really be in danger because a rich guy worries about his hairdo? But Republicans are rallying around this guy just as if he were a normal candidate. And if Democrats don’t rally the same way, he just might make it to the White House.
The Never Trumpers failed to block Trump. It's now up to the Democrats. If we shoot ourselves in the foot tomorrow, we are handing the welfare of Mother Earth to Trump's hair-do.