I'm not saying you should necessarily do anything. But if you anti-environmentalist, pro-development, pro-fossil-fuel people need a reason, try on some of these:
all are stewards—not owners—over this earth and its bounty and will be accountable before God for what they do with His creations (see D&C 104:13–15). All humankind should gratefully use what God has given, avoid wasting life and resources, and use the bounty of the earth to care for the poor and the needy (see D&C 49:19–21).
To be complacent with His creations offends Him (see D&C 59:18–21). . . .
The earth is endowed with an array of natural resources that will provide for the human family if they are used as the Lord instructed—to care for the poor and the needy and not use more than is needed (see D&C 104:14–18); to avoid waste (see D&C 49:19–21); and not to forcibly take resources from another (see D&C 59:20). . . .
Check with your local utility company, local community groups, or on the internet to find suggestions to conserve energy and to recycle. Support community recycling programs. Consider starting a community garden. Support local civic groups that promote stewardship and conservation. Be an involved citizen in government. Be informed, respect the views of others, and treat everyone with civility. . . .
Use the resources of the earth sparingly and reverently. Adopt lifestyles and personal habits that respect the Creation. As you can, fix up and keep clean the places where you live, work, recreate, and worship. Make your own living space more beautiful and inspirational. . . .Yeah. Just sayin'.
All quoted text is from the new LDS Gospel Topics Essay: Environmental Stewardship and Conservation, at LDS.org.