I'm sorry if this sounds like beating a dead horse, but after reading a lot of articles here through my new membership I think I saw a few products got "bad" weight rating because their company switched to more eco-friendly materials. It seems also GoLite is quite thrashed here recently because their gear have gotten heavier, although they've begun switching to eco-friendly materials (disclosure: I don't have any relation with GoLite).
I hope BPL as the only media with scientific and educated approach for outdoor gear reviews could write an article to educate us about the impact of ultralight material manufacturing to environment, which material is eco-friendly or not, and finally give some additional rating for eco-friendliness in future reviews.
For the sake of Leave no Trace, I hope a few ounces weight saving does not have to leave a lot of environmental hazard in China, Vietnam, Indonesia, etc…
I'm sorry if my English sounds funny, because it's not my mother language.
Cheers!

