A series of updates to country commitments (this NDC) would represent a long road to signalling dynamics. So far, there have been few updates and, well, not ambitious enough to get the world on track to reach 2oC or 1.5c. We have not yet heard from several major issuers and the secretariat has now extended the deadline to December 31, 2020. The United Kingdom, which is chairing the upcoming UNFCCC Climate Change Parties Conference, is encouraging the parties to present ambitious NDCs ahead of the celebration of the fifth anniversary of the Paris Agreement on 12 December 2020. Warmer temperatures, both on land and at sea, are changing global weather and changing how and where precipitation falls. These changing patterns exacerbate dangerous and deadly droughts, heat waves, floods, forest fires and storms, including hurricanes. They also melt ice caps, glaciers and permafrost layers, which can lead to sea level rise and coastal erosion. Warmer temperatures also affect entire ecosystems, deterring migration patterns and life cycles. For example, an early spring can make trees and plants bloom before bees and other pollinators are born. While global warming may be akin to longer growing periods and increased food production in some areas, areas already facing water shortages are expected to become drier and create potential for drought, broken harvests or forest fires. In January 2007, House Democratic spokeswoman Nancy Pelosi announced that she would form a subcommittee of the U.S. Congress to investigate global warming. Sen. Joe Lieberman said, „I`m hot to do something. It is difficult to conclude that the policy of global warming has changed, that a new consensus is being reached on the measures and that it is a consensus between the parties.  Senators Bernie Sanders (I-VT) and Barbara Boxer (D-CA) introduced the Global Warming Pollution Reduction Act on January 15, 2007. The measure would provide research and development funds for the geological sequestration of carbon dioxide (CO2), set emission standards for new vehicles and a need for renewable fuels for gasoline from 2016, establish energy efficiency and emissions portfolio standards from 2008, establish low-carbon standards for electricity generation for electricity suppliers from 2016, and require regular National Academy of Sciences to determine whether emission targets are appropriate.  However, the bill died in committee. Two other bills, the Climate Change Act and the Sustainable Energy Act, which was proposed on 14 February 2013, also failed the committee.  Montreal 1987. Although the Montreal Protocol [PDF] was not designed to combat climate change, it was a historic environmental agreement that has become a model for future diplomacy on this issue.
Each country in the world finally ratified the treaty, which required it to stop the production of substances that harm the ozone layer, such as chlorofluorocarbons (CFCs). The protocol eliminated nearly 99% of these ozone-depleting substances. In 2016, the parties agreed on the Kigali amendment to also reduce their production of hydrofluorocarbons (HFCs), the powerful greenhouse gases that contribute to climate change. As part of this debate, important climate agreements have developed in the pursuit of emissions reductions. The Kyoto Protocol only required industrialized countries to reduce their emissions, while the Paris Agreement recognized that climate change was a common problem and called on all countries to set emission targets.