The document evaluates the authority and objectivity of four sources on climate change: The Royal Society website provided the most authoritative and detailed information as it was produced by objective academic researchers. While Compassion in World Farming argued subjectively about the link between factory farming and climate change. Live Science articles were objective but less authoritative and academic than The Royal Society. Wikipedia can lack authority as it can be edited by anyone but its climate change article provided an overview and linked to reliable sources.