15,000 scientists warn time is running out to save the planet
A scorecard about the Earth - graphically illustrating trends since the majority of Nobel Laureates signed the initial warning - has gone viral and attracted what is thought to be the most signatories to any scientific paper.
Twenty five years ago, a majority of the world鈥檚 living Nobel Laureates united to sign a warning letter about the Earth; today, scientists have taken grassroots action, with a scorecard聽鈥� created in the United States and seeded in Australia going viral and continuing to gain signatures 鈥� showing that of nine areas only one has improved: our ozone.
The scientist say urgent action must be taken to avoid substantial and irreversible harm to the Earth.
The article, 鈥淲orld Scientists鈥� Warning to Humanity: A Second Notice鈥�, has been co-signed by more than 15,000 scientists in 184 countries and is published today in the journal .
Included is a series of graphs that highlight at a glance the direction things have headed.
Co-author Dr Thomas 高清福利片ome, a research fellow at Deakin University and The University of Sydney's , said he believed this was possibly the biggest number of signatories to any published scientific paper.
鈥淚t鈥檚 an overwhelming response we didn鈥檛 quite expect,鈥� said Dr 高清福利片ome, who issued a number of Tweets to garner interest via his handle and using the hashtag .
Dr 高清福利片ome, a multi award-winning early career researcher and author, said their , four months ago, attracted almost 600 signatories.
鈥淧eople just started sharing the letter; it was added to a few email lists and things just took off from there,鈥� he said.
identified trends that needed to be reversed to curtail environmental destruction, including ozone depletion, forest loss, climate change and human population growth.
鈥淚n this paper we look back on these trends and evaluate the subsequent human response by exploring the available data,鈥� Dr 高清福利片ome said.
Global trends
Among the negative 25-year global trends noted in today鈥檚 article are:
- A 26 percent reduction in the amount of fresh water available per capita
- A loss of nearly 300 million acres of forestland
- A collective 29 percent reduction in the numbers of mammals, reptiles, amphibians, birds and fish
- A 75 percent increase in the number of ocean dead zones.
The situation in Australia
Dr 高清福利片ome said habitat loss was the number one threat in Australia, and in 2017 we ranked for global biodiversity loss, behind Indonesia.
鈥淭here鈥檚 been on an alarming rise in tree clearance in Queensland - about 400,000 hectares per year; the equivalent of 400,000 football fields - which puts us in line with Brazil,鈥� Dr 高清福利片ome said.
鈥淎ll the while we have very low public spending for example on threatened species - around $70 million each year, or less than one hundredth of a percent of the federal government鈥檚 annual revenue of $416.9 billion - we spend more rehabilitating mine sites each year,鈥� he said.
Scientists' alliance
The article states 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.
Co-authors of the article include William Ripple and Christopher Wolf at Oregon State University and Eileen Crist of Virginia Tech in the United States; Mauro Galleti of the Universidade Estadual Paulista in Brazil; Thomas 高清福利片ome of The University of Sydney and Deakin University and William Laurence of James Cook University in Australia; Mohammad Alongir of the University of Chittagong in Bangladesh; Mahmoud Mahmoud of the National Oil Spill Detection and Response Agency in Nigeria.