Green tech reduces the amount of carbon dioxide and other greenhouse gases produced and emitted into the atmosphere. Common examples of green energy solutions include wind turbines and solar panels, which are becoming more accessible and less expensive as the technology and expertise behind wind and solar power increase. However, there are calls for more drastic measures to reverse rather than slow climate change and other harmful impacts on the natural world, depleting resources and impacting everything from melting the ice caps and droughts to wildfires and flooding. Carbon-negative technology works to extract carbon from the atmosphere, whereas renewables replace existing energy forms.