Without education, we are weaker economically. Without economic power, we are weaker in terms of national security. No great military power has ever remained so without great economic power.
World War II ended the Great Depression with one of the great public-private industrial collaborations in the history of man.
Environmental concern is a little like dieting or paying off credit-card debt - an episodically terrific idea that burns brightly and then seems to fade when we realize there's a reason we need to diet or pay down our debt. The reason is that it's really, really hard, and too many of us in too many spheres of life choose the easy over the hard.
If heaven is understood more as God's space on earth than as an ethereal region apart from the essential reality we know, then what happens on earth matters even more than we think, for the Christian life becomes a continuation of the unfolding work of Jesus, who will one day return to set the world to rights.
If a person is homosexual by nature - that is, if one's sexuality is as intrinsic a part of one's identity as gender or skin color - then society can no more deny a gay person access to the secular rights and religious sacraments because of his homosexuality than it can reinstate Jim Crow.