(Update: 23 January 2019)
The International Wool Textile Organinisation (IWTO) released a series of Factsheets about the properties of wool.
Download Wool Fact Sheet 1: Wool is Biodegradable
Download Wool Fact Sheet 2: Wool & Skin
Download Wool Fact Sheet 3: Wool & the Environment
Download Wool Fact Sheet 4: Wool & FireSafety