The United Nations Environment Programme estimates that 40% of the world population will be affected by the loss of glaciers and snow on the mountains of Asia due to global warming.
- The British Antarctic Survey announces that the flow rate of 300 previously unmeasured glaciers increased by 12% between 1993 and 2003, adding to concerns over glacier retreat and the rise in sea levels caused by global warming.
- Eleven countries in Asia, North America, Oceania, and South America sign the revised Trans-Pacific Partnership trade agreement.
- An anomalous weather event caused due to dust from a sandstorm in the Sahara, leads to an orange snow blanketing several Eastern European countries, including Ukraine, Bulgaria, Romania and Russia. This weather event happens roughly every five years; a similar event occured in Siberia in 2007.
- A lunar eclipse is seen in Oceania, Asia, and North America, coinciding with a supermoon and blue moon.
- The U.S. Environmental Protection Agency announces, effective in 2019, it will no longer sponsor the Climate Leadership Awards program that honors voluntary corporate actions to combat global warming.