New Delhi, Nov 15: A group of over 15,000 scientists from all over the world has sent out a critical warning for saving Planet Earth. The scientists have said that urgent action has to be taken to avoid “substantial and irreversible” harm to the planet. Scientists from 184 countries have signed a letter, called the World Scientists’ Warning to Humanity: A Second Notice, published in the journal BioScience.

The scientists say that time is running out to save the Earth. They have added that most of the planet’s problems are getting “far worse.”

The initial version of the article was released in 1992 by the Union of Concerned Scientists and was signed by 1,700 experts. The initial warning 25 years ago identified trends that needed to be reversed to curtail environmental destruction, including ozone depletion, forest loss, climate change and human population growth. Today, scientists say that of nine areas only one has improved: our ozone.

Thomas Newsome, a research fellow at Deakin University and The University of Sydney in Australia, says that this was possibly the biggest number of signatories to any published scientific paper. “In this paper we look back on these trends and evaluate the subsequent human response by exploring the available data,” Newsome said.

The latest article has highlighted the negative 25-year global trends, including a 26 per cent reduction in the amount of fresh water available per capita and a loss of nearly 300 million acres of forestland. It also stated there is still time but notes the areas that need to be improved, including promoting dietary shifts away from meat, encouraging the adoption of renewable energy and limiting human population growth.

The study comes at a time when Delhi NCR and parts of North India are reeling under a thick blanket of smog with pollution levels hovering around severe for the past few days.