greenhouse-gas emissions
Climate change is a global problem. The planet is warming because of the growing level of greenhouse gas emissions from human activity. If this trend continues, truly catastrophic consequences are likely to ensue from rising sea levels, to reduced water availability, to more heat waves and fires. Malcolm Turnbull
Factory farming is one of the biggest contributors to the most serious environmental problems. The meat industry causes more greenhouse gas emissions than all the cars, trucks, planes and ships in the world. Joan Jett
I hope that in future Congresses there will reemerge a recognition that climate change is a reality, that our policies to meet our energy needs must also deal responsibly with environmental issues, including the damage caused by greenhouse gas emissions. Jeff Bingaman
Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions. James Hansen