Effects of Global warming The effects of worldwide warming are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases. there's a scientific accord that temperature change is happening , which human activities are the first driver. several impacts of temperature change have already been discovered , as well as ice mass retreat, changes within the temporal order of seasonal events (e.g., earlier flowering of plants), and changes in agricultural productivity. phylogeny forcing has probably contributed to a number of the discovered changes, as well as water level rise, changes in climate extremes, declines in Arctic ocean ice extent and ice mass retreat.