Gee, it is the only planet we currently inhabit. How can we feed the poor if some countries, like China and India, are destroying the top soil and ground water?
How can we show love not just one another today, but also to generations to come?
I cannot answer that question, but I can state with certainty: thinking we must show our love by enforcing often wrong and misguided standards of environmental "good stewardship" on others, individuals or whole nations, is solely an exercise in vanity.
You ask the wrong question when you frame it in terms of "how can we show love," because you presume to ask it for me. I already have my answer, thank you. See my tagline -- that "personal relationship" -- Psalms doesn't talk about His word as a lamp unto our feet, but mine.
Serving God is a personal business. When government presumes to do it for "us," amoral tyranny results.