Climate change is now affecting every country on every continent. It is disrupting national economies and affecting lives, costing people,
and countries dearly today and
even more tomorrow. People are experiencing the significant impacts of climate change, which include changing weather patterns, rising sea level, and more extreme weather events. The
greenhouse gas emissions from human activities are driving climate change and continue to rise. They are now at their highest levels in history. Without action, the world's average
surface temperature is projected to rise over the 21st century and is likely to surpass 3 degrees Celsius this century-with some areas of the world expected to warm even more. The
poorest and most vulnerable people are being affected the most. Affordable, scalable solutions are now available to enable countries to leapfrog to cleaner, more resilient economies.
The pace of change is quickening as more people are turning to renewable energy and a range of other measures that will reduce emissions and increase adaptation efforts. But climate
change is a global challenge that does not respect national borders. Emissions anywhere affect people everywhere. It is an issue that requires solutions that need to be coordinated at
the international level and it requires international cooperation to help developing countries move toward a low-carbon economy. To address climate change, countries adopted the
COP21 in Paris
on 12 December 2015. In the agreement, all countries agreed to work to limit global temperature rise to well below 2 degrees Celsius, and given the grave
risks, to strive for 1.5 degrees Celsius. You can
learn more about the agreement here.
Implementation of the Paris Agreement is essential for the achievement of the
Sustainable Development Goals,
and provides a roadmap for climate actions that will reduce emissions and build climate resilience.
On 21 September, countries will come to the United Nations Headquarters to deposit their instruments of ratification. The Agreement enters into force "on the thirtieth day after the
date on which at least 55 Parties to the Convention accounting in total for at least an estimated 55 percent of the total global greenhouse gas emissions have deposited their instruments
of ratification, acceptance, approval, or accession."