pgleick | March 31, 2013There’s nothing like spending time in the desert to make one appreciate water.
It might seem strange to some that a water wonk like me spends considerable time in the desert. I've tried to go down to the vast Southern California desert for some time every year, typically in the spring when the winter cold is receding and the days are getting longer and there is a chance of some of the dramatic wildflower blooms that the sparse desert rains can produce. The skies at night are phenomenal; the landscapes primitive, and the wildlife raw. There is no better place to see how nature adapts to…
pgleick | March 21, 2013Some thoughts for today: the bad news and good news for World Water Day. [First, I think every day should be World Water Day, not just March 22nd, but hey, that’s just me.]
Stop taking your tap water for granted. Go to your tap, draw a glass of water, and drink it. Then remember that nearly a billion people still do not have reliable access to safe, affordable tap water and cannot do what you've just done.
Stop taking your toilet for granted. Nearly 2.5 billion people (more people than lived on the planet in the 1930s) don’t have safe sanitation.
Do you know anyone who had cholera, or typhoid…
pgleick | March 21, 2013Nearly two years ago, Science magazine published the following Lead Letter, signed by 255 members of the U.S. National Academy of Sciences addressing attacks on the integrity of climate science. The science has continued to strengthen, the evidence in real world observations has become even stronger and more obvious.
In response, in the past few months, there has been a last-gasp effort (see, for example, here and here) on the part of the ever-shrinking group of hard-core climate deniers to confuse the public and especially our elected officials. Given this continuing profusion of false and…
pgleick | March 20, 2013Water is a theme that runs through all forms of popular culture, from books to myths to Hollywood and international films, with a growing number of shorter video pieces posted online at YouTube and similar sites. Having trouble keeping your Netflix list populated? Below are some classic (good and bad) movies – good and bad – with some kind of water theme: conflict over water in classic western movies; science-fiction thrillers with a water component; visions of the apocalypse where water access or contamination plays a role; and more. (An early version of this list was published in the last…
pgleick | March 13, 2013Here is the second in what will be a series of posts on how little things like changes in technology we take for granted, or simple behaviors, can have a big impact on water use. The first looked at turning off the water when you brush your teeth: a seemingly trivial thing. It turned out not to be so trivial. (I will, on occasion, also blog about the “not so little” things like fundamental changes in our agricultural systems, dietary choices, and industrial processes.)
The Pacific Institute has done extensive and groundbreaking research over the past 25 years on a wide range of water, climate…
pgleick | March 11, 2013In a previous post here, I discussed the scourge of cholera – a waterborne disease largely vanquished in the wealthier nations by our water and wastewater treatment systems. Unfortunately, it remains widespread and lethal. Cholera is perhaps the most common and serious water-related disease, directly associated with the failure to provide safe drinking water and adequate sanitation to billions of people. Millions – mostly young children – die unnecessary deaths each year from these diseases.
This week is the 200th anniversary of the birth of the man who would help settle, once and for all,…
pgleick | March 7, 2013Sometime, about one year from now, the front pages of whatever decent newspapers are left will carry a headline like the one above, announcing that for the first time in human existence (or in nearly a million years, or 3 million years, or 15 million years), the global atmospheric concentration of carbon dioxide – the principal gas causing climate change – will have passed 400 parts per million.
That’s a significant and shocking figure. Unfortunately, it is only a temporary marker on the way to even higher and higher levels. Here (Figure 1 below) are the most recent (March 2013) data from the…
pgleick | February 27, 2013OK, put away your guns. We’re not talking shooting wars, at least not yet, at least not in the U.S. We’re talking politicians shooting off their mouths, political wars, and court battles. But water is serious business.
But it is a different story around the world, where there is a long and sad history of violent conflict over water. At the Pacific Institute we maintain the Water Conflict Chronology, documenting examples going back literally 5,000 years.
As others have pointed out, water can be – and often is – a source of cooperation rather than conflict. But conflicts over water are real.…
pgleick | February 26, 2013One of the most important and threatening risks of climate change is sea-level rise (SLR). The mechanisms are well understood, and the direction of changes in sea-level is highly certain – it is rising and the rate of rise will accelerate. There remain plenty of uncertainties (i.e., a range of possible outcomes) about the timing and rate of rise that have to do with how fast we continue to put greenhouse gases in the atmosphere, the responses of (especially) ice sheets in Greenland and Antarctica, and the sensitivity of the climate.
Even little changes can have big consequences. As we saw…
pgleick | February 21, 2013The Pacific Institute has done extensive and groundbreaking research over the past 25 years on a wide range of water, climate, energy, and environmental issues. One focus has been on how to use water more efficiently to do the things we want to do – a focus on “efficiency” and “productivity” – not deprivation.
Society could certainly cut water use by removing urban lawns, or never washing our cars again, or eliminating irrigated alfalfa in the desert. But we've never recommended these things. Why? Not because the water savings from such changes are small: some of these things can produce vast…
pgleick | February 20, 2013One of the reasons that climate change is such a big issue is because the global climate is an integral part of the Earth’s entire ecosystem, tied to so many of the big and little things that society cares about. Figuring out how all these complicated pieces tie together is hard, as is linking these pieces together in the minds of the public so that we – and our policy makers – can grasp the true implications of a changing climate and plan for them. Because this is so important, I expect that many of my future posts here will address this issue, but let me start with one example: the…
pgleick | February 14, 2013Invest in the future. And especially, invest in sustainable, effective job creation in the water sector. The result will be millions of new jobs – a significant result.
That is the key message from a new analysis just released today by the Pacific Institute on sustainable water jobs in the United States. That study, Sustainable Water Jobs: A National Assessment of Water-Related Green Job Opportunities, finds that proactive investments increasing efficient water use, improving water quality, expanding smart water treatment and re-use, and more will address growing problems associated with…
pgleick | February 13, 2013We’re bombarded with numbers every day. But seeing a number and understanding it are two different things. Far too often, the true “significance” of a figure is hidden, unknown, or misjudged. I will be returning to that theme often in these blog posts in the context of water, climate change, energy, and more. In particular, there is an important distinction between accuracy and precision.
Here is one example – reported cases of cholera worldwide. Cholera is perhaps the most widespread and serious water-related disease, directly associated with the failure to provide safe drinking water and…
pgleick | February 10, 2013It is time we just said “no.”
There is growing attention to climate change in the media; and there is a growing realization that decisions we make today will have a lasting effect on the world’s climate tomorrow.
But there is still a gap – a chasm really – between the reality of climate change and our day-to-day choices, investments, and public debates about water, energy, food, and resources.
Here is the reality: the burning of fossil fuels is the leading contributor of gases that are already changing the planet’s delicate climate, and the climate will continue to change in an exponentially…
pgleick | February 8, 2013Welcome to the first post in my new National Geographic ScienceBlogs column “Significant Figures.” I look forward to sharing my thoughts with you on a wide range of environmental science-related issues, data, and people, and to a productive and constructive interaction.
My background? I’m an environmental scientist by training and inclination, with experience in engineering, hydrology, climatology, and interdisciplinary analysis. My research and writing have, for over thirty years, focused on water resources, climate dynamics and change, energy, risk assessment, and the synthesis and…