While the concept of environmental science has existed for centuries, it came alive as a substantive, active field of scientific investigation in the 1960s and 1970s driven by: (Wikipedia)
Environmental science encompasses issues such as climate change, conservation, biodiversity, groundwater and soil contamination, use of natural resources, waste management, sustainable development, air pollution and noise pollution.
Nevertheless, despite a greater commitment by the World Government's to protect public health, forests, and wildlife, policies geared to develop the country's economy have taken precedence in the last 20 years. While industrial development has contributed significantly to economic growth in India, it has done so at a price to the environment. Not only are industrial pollution increasing public health risks, but abatement efforts also are consuming a significant portion of countries gross domestic product (GDP). The world environmental situation is likely to be further aggravated by the increasingly rapid, large-scale global extinction of species. It occurred in the 20th century at a rate that was a thousand times higher than the average rate during the preceding 65 million years. This is likely to destabilize various ecosystems including agricultural systems. (Singh Anup & Malhotra 57-58)
The variety of life on Earth, its biological diversity is commonly referred to as biodiversity. The number of species of plants, animals, and microorganisms, the enormous diversity of genes in these species, the different ecosystems on the planet, such as deserts, rainforests and coral reefs are all part of a biologically diverse Earth.
Most of our medicine from common drugs to possible cures for cancers comes from plants, many of which are now endangered,
The world ecological system has been kept in balance through a very complex and multifaceted interaction between a huge numbers of species. There is a link between biodiversity and climate change, as rapid global warming can affect an ecosystems chances to adapt naturally This rapid extinction is therefore likely to predicate collapses of ecosystems at a global scale. This is predicted to create large-scale agricultural problems, threatening food supplies to hundreds of millions of people. This ecological prediction does not take into consideration the effects of global warming which will further aggravate the situation.
As quoted in "human footprint too big for nature' WWF, October 24, 2006
"Already resources are depleting, with the report showing that vertebrate species populations have declined by about one-third in the 33 years from 1970 to 2003. At the same time, humanity's Ecological Footprint-the demand people place upon the natural world-has increased to the point where the Earth is unable to