I recently presented a paper with this title at the Southwest Regional meeting of the Evangelical Theological Society. The paper was well-received, though I would have wished for more input (don't we all!).

The basic argument of the paper proceeds like this:
1. Worship in the Bible is defined as fulfilling God's commands.
2. One of God's commands is to care for his creation.
3. Creation Care is an act of Worship.
4. Qualifications for what makes an act of service (e.g. creation care) an act of worship.
5. Recycling is an act of Creation Care.
6. Recycling is an act of Worship, and conclusions...

You can read the paper at: http://www.clickcaster.com/conservativeecology