OPINION The Interactive Dialogue on Harmony with Nature, a United Nations General Assembly session involved Member States and top officials discussing the need to take urgent action against the pace of global warming.

It’s vital every day to commit to taking better care of our planet. Please do everything in your power to tackle climate change — the defining issue of our time. Climate change is one of the largest threats to sustainable development globally. It’s just one of many imbalances caused by the unsustainable actions of humankind, with direct implications for future generations.

Maria Fernanda Espinosa, president of the UN General Assembly, said taking care of nature is in essence taking care of people. She said it’s important to respect the lifecycles of the natural world and contribute to biological diversity so the world can continue and prosper.

“We are the last generation that can prevent irreparable damage to the planet and to its inhabitants,” she tweeted. “We are at a crossroads; this is the moment in which we decide the path we wish to take, to avoid reaching a point of no return in global warming. We already know the results of inaction.”

The international Earth Day recognizes a collective responsibility, as called for in the 1992 Rio Declaration, to promote harmony with nature and the Earth to achieve a just balance among the economic, social and environmental needs of present and future generations of humanity. It also provides an opportunity to raise public awareness around the world to the challenges regarding the well-being of the planet and all the life it supports.

To boost ambition and accelerate actions to implement the Paris Agreement on Climate Change, the UN Secretary-General will host Sept. 23 the 2019 Climate Action Summit to meet the climate challenge.

António Guterres is the chief of the United Nations.