Latest News: Get the latest from Climate change. Find all current Top News. Factory farming intensifies climate change, releasing vast volumes of greenhouse gases. We now know that man-made climate change is real and that it poses a great threat to the planet and its inhabitants. Current data suggest that we need to reduce greenhouse-gas emissions in developed countries by at least 80% by 2050 in order to have a chance of staying below an average temperature rise of over 2ºC1. Factory farming is a major contributor to the climate change challenge, releasing vast volumes of greenhouse gases.