If you are interested in Sustainability Science - please follow the community Future Earth. Recently they launched a report Sustainability in a Digital Age. It explore the opportunities and challenges of the Digital Age from the lens of sustainability. I recommend to read it!
CO2 emissions - facts and figures that shows the global picture
The facts here, presented in this way, is something that everybody should see. It tells us how urgent the situation is and shows perfectly how the distribution look like regarding time, country, production, consumption. inequality and so on. Visit Our World In Data! Facts from the World Bank.