Posts tagged climate change


Climate change and the end of the Indus Valley Civilization

Pashupati, the Lord of Living Creatures, is depicted in many seals found in IVC. It is believed that Pashupati later evolved into Lord Shiva in the Vedic civilization.

First published: Biodiversity of India

The states of Punjab and Sindh in Pakistan and Punjab, Rajasthan and Gujarat in India had a great river named Saraswati (now the Ghagra Hakra river) flowing through their lands, four thousand years ago. The world’s first large civilization – the Indus Valley Civilization – arose on the banks of the Saraswati and the Indus rivers. At its peak in 2000BC, cities of the IVC such as Harappa and Mohenjo Daro housed over two hundred thousand people. The civilization was thriving – it had culture, a symbolic language, trade, city planning and a central rule of law. However, the civilization mysteriously vanished around 1500 BC. Hundreds of thousands of people disappeared, cities were lade bare and large swathes of land turned into deserts. Very few traces of this civilization are to be found in the next stage of India’s history – the Vedic civilization. What happened to all the people of the IVC? Why did such huge cities crumble to dust? Although several hypotheses have been proposed to address one of the biggest historical mysteries of all times, one leading explanation involves the role of climate change.

Many experts today believe that the IVC disintegrated after the Saraswati river started turning dry. Satellite imagery of the region along the Indo-Pakistan border clearly shows existence of vast underground channels where the mighty Saraswati once flowed. Most currently known sites of the IVC line perfectly along these channels, suggesting that these massive cities propped up along the banks of Saraswati. It is also believed that there was a general weakening of the monsoon system around 1500BC. It is believed that hordes of people migrated from the IVC and went towards the Gangetic plains or to Central Asia. Research has also shown that the new centers of activity arose east of the Saraswati a few hundred years after the Saraswati dried up.

Species such as the Great Hornbill in Arunachal Pradesh are threatened today.

Human civilization has existed in India for the past fifty thousand years – ever since the first pre-humans migrated out of Africa and proceeded towards the southern coastline of India. Millions of migrants and conquistadors have since entered India through the northwestern frontier. Most decided to stay here – the country had plentiful rivers, a beautiful landscape, fertile soil and an amazing biodiversity. The cultural evolution over the past two thousand years saw much of this nature get integrated into the lifestyle of the people. Right from having gods bearing pythons and elephant heads to finding medicinal uses of leaves and roots, from worshiping the rivers as deities to considering the earth as the Mother (Dharti Mataa), India’s nature got richly integrated into its culture. India, not just the country, but also the concept, exists because of its nature. As the example of the IVC shows, you destroy India’s nature and you’d have disintegrated its civilization.

This scenario is no longer a historical, or for that matter, a futuristic one. It is very much a problem this generation and the generations to come have to deal with. Climate change today is a reality. According to several scientific reports, India and its 1.5 billion people and countless species will be among the worst affected by climate change. Himalayan glaciers, for example, provide water to one third of the world’s population. These glaciers are the sources of our rivers like the Ganga, the Indus and the Brahmaputra. What happens when the water starts running low? On the other side of the country lie the mighty Western Ghats. Rivers like the Cauvery and Krishna have their sources in the Western Ghats. These megadiverse ranges are the most human-inhabited biodiversity hotspots in the world. Predictions suggest that changing patterns of the monsoon winds will significantly change water availability and the ground water table in these regions. What will that mean for the people living in these areas? How will it affect the rich flora and fauna?

Questions like these are no longer hypothetical but very much a reality. This is no longer a time to take petty, superficial actions and put a plaster over the developing cracks. We are no longer dealing with petty issues like bringing CO2 emissions down to pre-1990 levels or signing nominal accords with foreign countries. We are certainly not dealing with petty divisions of language, caste and religion. We are at one of the biggest crossroads of the Indian civilization today. The scenario is much the same as what the people of the IVC faced four thousand years ago. We can either let the India of today degenerate into chaos or we can take bold actions with a sense of urgency. The kind of India our children inherit tomorrow is very much dependent on what action we take today. That is what we must all realize.

Global warming is real, skeptics seem to agree. What next?

A new study funded by the Koch group seems to have come to the conclusion that global warming is real and is caused by human activities. The Koch Industries, owned by the Koch family, has annual revenues of $100 billion and has a broad product base, comprising from oil and gas to fertilizers and paper pulp. Almost all of these products are dependent on exploitation of natural resources and hence, it is quite natural that the Koch family was one of the biggest supporters of anti-climate action in the US. Since 1997, the Koch family has spent over $100 million lobbying against climate-change actions in Washington and supporting the agenda of other fossil-fuel companies. But this study, funded in part by the Koch group and with two strong climate-change skeptic scientists in the team of seven lead investigators, seems to have landed a bombshell in Koch group’s business interests.

Richard Muller, the founder and scientific director of Berkeley Earth Surface Temperature (BEST) project made the following statement in a recent NY Times post:

CALL me a converted skeptic. Three years ago I identified problems in previous climate studies that, in my mind, threw doubt on the very existence of global warming. Last year, following an intensive research effort involving a dozen scientists, I concluded that global warming was real and that the prior estimates of the rate of warming were correct. I’m now going a step further: Humans are almost entirely the cause.

What does this mean for the politics of global warming? Surveys indicate that less than half of the US citizens think global warming is due to human activities (In India, less than half KNOW what global warming is). Will this study help bring some of those skeptics on board? Or will it be politics as usual again? In his NY Times post, Muller also says:

Hurricane Katrina cannot be attributed to global warming. The number of hurricanes hitting the United States has been going down, not up; likewise for intense tornadoes. Polar bears aren’t dying from receding ice, and the Himalayan glaciers aren’t going to melt by 2035. And it’s possible that we are currently no warmer than we were a thousand years ago, during the “Medieval Warm Period” or “Medieval Optimum,” an interval of warm conditions known from historical records and indirect evidence like tree rings. And the recent warm spell in the United States happens to be more than offset by cooling elsewhere in the world, so its link to “global” warming is weaker than tenuous.

Will the political skeptics harp on this statement rather than the science? Obama has followed an “all of the above” approach for energy in the US. He’s opened up offshore drilling and expanded shale gas explorations, leading to a significant stability in oil prices in the US despite Libya and Syria and collapsing of the European economy. He’s also invested in several clean energy projects. However, US still ranks second in terms of global CO2 emissions and releases ~17 tons CO2/person/year, compared to 6.2 tons in China, 1.7 tons in India, 9 tons in Japan and Germany, 8 tons in UK and 5 tons in France. There is an enormous scope for improvement in the US which the second term of Obama should address on a war footing!




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