A warning to humanity dates back to 1992 when 1700 scientists alleged that humans are to push the ecosystem to the extreme worst.

The deeds of humans not only harm humans, animals but also ruin the ecosystem. Ozone depletion, water pollution make the soil unproductive, kill the fish, lead to deforestation.

particle physicist and Union of Concerned Scientists co-founder Henry Kendall said, “If not checked, many of our current practices put at serious risk the future that we wish for human society and the plant and animal kingdoms, and may so alter the living world that it will be unable to sustain life in the manner that we know.” They say, “Humanity has failed to make sufficient progress in generally solving these foreseen environmental challenges, and alarmingly, most of them are getting far worse.”

In a communique published in the journal Bioscience, 184 countries set up more than 15,000 scientists to assess the world’s latest responses to different environmental threats.

“Soon it will be too late to shift course away from our failing trajectory,” issues a second notice by William Ripple, the Ecologist from Oregon State University.

They also say that the concentration of CO2 in atmosphere has put up to 62% leading to an increment in the global average temperature by half a degree Celsius since 1992.

The amount of fresh water is decreased, cutting down of forest lands has become a habit. These kind of activities lead to a reduction in the animal population. The human population has grown to 2 billion whereas animal population is decreased by 30% approximately.

The CFCs that are being released from air conditioners, refrigerators make holes in the ozone layer which has been the greatest reason to harm plants, they say.

The letter says, “The rapid global decline in ozone depleting substances shows that we can make positive change when we act decisively.”

They also suggested 13 measures to protect the environment and to make it green. The Alliance of World  Scientists, a new organization formed by Ripple and his colleagues aims at providing a new scientific perception on the issues that affect the weal of the people on the Earth.“Scientists are in the business of analyzing data and looking at the long-term consequences, those who signed this second warning aren’t just raising a false alarm. They are acknowledging the obvious signs that we are heading down an unsustainable path. We are hoping that our paper will ignite a widespread public debate about the global environment and climate,” says Ripple.

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