This year, two very important UN conferences are taking place:
1) COP27 (7th - 17th Nov) in Egypt will discuss the UN Framework Convention on Climate Change
This convention aims “to achieve […] stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic interference with the climate system. Such a level should be achieved within a time-frame sufficient to allow ecosystems to adapt naturally to climate change, to ensure that food production is not threatened and to enable economic development to proceed in a sustainable manner.”
In other words, the aim of this convention is to reduce emissions so that we do not negatively impact our global climate system and buy ourselves time to adapt and build resilience to the impacts of a changing climate e.g. building flood defences, using drought-resistant crops.
2) COP15 (7th - 19th Dec) in Canada will discuss the UN Convention on Biological Diversity
This convention's objectives "are the conservation of biological diversity, the sustainable use of its components, and the fair and equitable sharing of the benefits arising from commercial and other utilization of genetic resources. The agreement covers all ecosystems, species, and genetic resources.”
In other words, the aim of this convention is to maintain and restore biodiversity around the world.