There are many while you ...

There are many while you browse the net.  However, the current major topics challenging Environmental Governance are :

Climate Change: T he recent Conference of Parties (COP) mandated 'Carbon Neutral' approach to address the climate change and reduce the carbon dioxide concentration in the atmosphere.  Every country needs to formulate regulations accordingly.

Decarbonization:  Decarbonization again is related to the way current power generation is with fossil fuels.  However, renewables seem to be an option towards reducing the power generation through fossil fuels.  Many countries have laid emphasis on renewables (Solar and Wind) through amended regulations.

Water Conservation:   Water being a precious commodity for human survival and that it is becoming crucial for its conservation, many countries are mandating water conservation more seriously now than before.  Again, the recent floods and drought have been attributed to climate change.