Like the COVID-19 pandemic, climate change is a problem countries must work together to address or ¡°all nations will feel the reverberations,¡± the United Nations¡¯ climate chief warned on Wednesday.

The novel coronavirus has ignored national borders and ¡°climate change respects them even less,¡± Patricia Espinosa said in an online lecture for the London School of Economics.

¡°Many places that thought they would be completely free of the effects of climate change ... are already feeling it,¡± said Espinosa, executive secretary of the U.N. Framework Convention on Climate Change.