The 25th Conference of the Parties (COP) begins this week in Madrid.
Negotiators from almost 200 countries will gather for key climate talks as a critical 12 month-battle against rising temperatures begins.
The UN secretary-general has warned that the world has reached a point of no return and that action must be taken promptly.
Earlier, The World Meteorological Organization announced that greenhouse gas concentrations reached their highest record level in 2018.
According to the UN Environment Programme, there is a noticeably large gap between governments' plans to cut emission and what's needed to avoid warming by more than 1.5 degrees Celsius.
The conference, which started today, will end on Friday December 13.


Trump says Iran's leaked deal terms are untrue
Trump says Iran war deal close as Strait of Hormuz tensions linger
Victims' families mark Air India crash anniversary with prayers and tributes
Ebola outbreak spreads to crowded displacement camp in Congo
Fire breaks out at New Zealand's Wellington airport, disrupting flights
Ukraine and Russia trade overnight drone strikes, officials say
UN says Taliban arrest 30 women for violating hijab rules in Afghanistan
Trump cancels US strikes on Iran, citing progress in talks
