If you're looking for numbers to back up your arguments, try some of these resources.
In addition to going to specific think tank websites, try the following database to search across think tank publications on a particular topic.
Websites of environmental NGOs
These databases include articles from trade journals, which can provide insights into the perspectives of different industrial sectors. Try the following in either of these databases:
There are many trade organizations and associations that provide a platform for industry-wide perspectives and policy positions. Try searching Google for an industry along with the word 'association' to find the key representatives in different sectors. For example, try the following searches in Google:
Finally, you can find statements about the environment on the websites of major companies in particular industries, like BP or the Honda Motor Company. Look under the About Us or Who We Are sections for company statements about the environment. You can also search Google with the company name and the term environment: GE environment.