For thousands of years, the environment stayed close to its natural state, exerting its influence on living forms. But in the past century, things have changed drastically as human beings have altered the paradigm of the environment. Imagine the world, in which people would not see trees and a blue sky when they go outside. Imagine stepping out of a house and not being able to walk a few feet without getting winded because of the amount of pollution in the air. This might become a reality if don't think about the consequences of our action.
And, so NASA have released a list of pictures which show the difference of how these glaciers and mountains have transformed over years.
These were once known as an irresistible challenge for mountaineers but climate change has stripped the mountain of its snow with lumps of rock falling off.
It's very well noticable the patches of snow left over.
The Rondonia forests in Brazil are stretching across 51.4 million acres but now, due to deforestation, an area larger than the state of West Virginia, lies barren.
Hardly anything is visible.
The Powell lake, Arizona and Utah. The lake now dried up because of diminished snowfall from the Rockies.
MaCarty Glacier, Alaska July 1909- August 2009.
Aral sea, Central Asia and that too these pictures were clicked within a span of four years. And see the drastic change.
A severe drought in Argentina led to the destruction of this lake.