3p Contributor: Pablo

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Recent Articles

AskPablo: Helicopter Emissions

| Monday October 1st, 2007 | 5 Comments

helicopter.jpgThis week I was asked by George about helicopter emissions. Recently Astrum Helicopters announced that they will be offering helicopter adventures and direct helicopter transfers to Chaa Creek, an award-winning eco-resort in Belize. To my reader it seemed contradictory to the mission of a Green Globe benchmarked resort to use helicopter transportation due to the potentially harmful effects of greenhouse gas emissions and noise pollution. But how bad is it really? Read on to find out…

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AskPablo: The Northwest Passage

| Monday September 24th, 2007 | 4 Comments

NW%20Passage.jpgThis week a reader asks about how much the now open Northwest Passage will save in shipping emissions. This year, for the first time in recorded history, the Northwest Passage has become fully ice-free. This means that this Northern sea route around the Americas is now fully navigable, and will become increasingly so over the next few years. The Northwest Passage is expected to be a feasible alternative to the Panama Canal in 10 to 20 years, maybe sooner. But how much fuel and GHG emissions will it actually save to send container ships and supertankers into the arctic? Read on to find out…

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Greenbiz Sustainable MBA Column: Sustainability in the Workplace by Pablo Paster

| Friday September 21st, 2007 | 1 Comment

Pablo2.jpgWhile the business world is abuzz with talk of green and sustainable business practices, it’s important to remember that workplace sustainability goes far beyond switching out light bulbs and turning down the thermostat. Sustainability has both internal and external drivers and spans environmental and social dimensions. Below are a few key points to take into consideration:

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AskPablo: Iceberg Water

| Monday September 17th, 2007 | 1 Comment

greenland.jpgAfter seeing images of the melting Greenland Icecap on television this weekend my mother asked me if it would be economical to collect that water and deliver it to drought stricken regions. After my posting on bottled water (AskPablo: Exotic Bottled Water) many of you know that I am generally not a fan of shipping drinking water over great distances. But could this be a more environmentally friendly solution than desalination (AskPablo: Desalination and the Water-Energy Relationship)? Read on to find out…

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AskPablo: Coal-Fired Power Plants

| Monday September 10th, 2007 | 13 Comments

This week I am going to examine the world of coal-fired power plants. Coal is an energy-dense substance found deep underground. Like oil and natural gas it is made from prehistoric organisms and biomass under intense heat and pressure. The living precursors to these fuels sequestered CO2 from the atmosphere, as plants do today, and have locked it away for millions of years, making the atmosphere conducive to life as we know it. In extracting and combusting these fuels we are returning that CO2 into the atmosphere. Is one fuel just as bad as the others or is coal just evil? Let’s look at some numbers and find out.

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AskPablo: Wave Power

| Monday August 27th, 2007 | 6 Comments

wave.jpgAugust 13th’s article on desalination received a lot of great feedback. On reader informed me of a technology that uses wave power to pump sea water, at high pressures, through a reverse-osmosis filtration system, using virtually no fossil fuel-based energy. He also informed me that the same technology is being used to pump seawater uphill into large storage tanks. When electricity is needed the water is run back downhill and through a turbine generator. Brilliant! But how much energy can we get from the waves and how do we go about figuring that out? Well, that’s what I’m here for. Read on to find out…

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AskPablo: Commuting

| Monday August 20th, 2007 | 5 Comments

traffic.jpgThis week Calvin Tran wrote to AskPablo about commuting. He wrote: “I spend a lot of time in traffic because of bottlenecks in the highway system (three lanes going to two lanes). How much gas (and $) could be saved in removing these bottlenecks?” What a great question. I have been pondering this on my own commute since I frequently get stuck at one such bottleneck. Let’s explore the numbers…

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AskPablo: Desalination and the Water-Energy Relationship

| Monday August 13th, 2007 | 8 Comments

desal.jpgThis week Gary writes “my city is considering a desalination plant to provide drinking water. I have heard that desalination is very energy intensive. How does it compare to delivering water by pipe?” Luckily I recently came across a report that will help me answer this question.

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AskPablo: Is this a god dam?

| Monday August 6th, 2007 | 0 Comments

dam.jpgThis week I got an e-mail from Ken. He wants to harness the creek on his property to become more energy independent and lessen his personal impact on global climate change. I am going to examine the variables that will determine if Ken should go ahead with this project, and how much it might cost him.

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AskPablo: Land Use Changes

| Monday July 30th, 2007 | 7 Comments

tree.jpgThis week Tyler asks: “What is the climate change impact from deforestation, land-use changes, and reforestation?” This topic is quite relevant these days because many carbon offset organizations offer to plant trees to mitigate your personal carbon emissions. Are you really getting what you pay for? And what is the impact of cutting down a forest? These are the questions we will explore in this week’s AskPablo.

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AskPablo: Black Google

| Monday July 23rd, 2007 | 17 Comments

blackle.jpgThis week’s question comes from Julia. She asks “is it really true that a black Google page would save energy?” She is, of course, referring to a very popular article written by Mark Ontkush back in January. He claims that turning the Google page black would save 3000 MWh per year! As a result, Blackle was created. While it may be true that a CRT monitor uses 15 watts less with the black screen Mark does admit that only 25% of the world’s monitors are CRT. What about the rest of us, with shiny new LCD monitors?

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AskPablo: Time to get a new car?

| Monday July 16th, 2007 | 71 Comments

This week David asks “how much more energy efficient does a new car have to be to make up for the energy of production vs a used car? For example, if someone was considering buying a used car that gets 18 mpg vs. a new car that gets 30 mpg. At what point in driving would that increase in mpg make up for the energy of production of the new vehicle?” Read on to find the answer in this week’s AskPablo.

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AskPablo: City Living

| Monday July 9th, 2007 | 4 Comments

city.jpgSome time ago someone asked me if it is better for the environment to live in a city, or out in the country. I didn’t have an answer at the time, but I do now…

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AskPablo: Corn-Based Ethanol

| Monday July 2nd, 2007 | 18 Comments

corn.jpgJason keeps bugging me about my take on the issue of corn-based ethanol. This week I am finally going to take this one on. My gut feel is that it is the devil. Producing an energy-intensive crop that could feed starving people around the world (or at least feed the livestock that will become my next burger) to make a liquid fuel does not make sense to me. Corn farming is notorious for biocide use, genetic engineering, and endless square miles of sterile monoculture. The ammonium nitrate fertilizer, without which corn could not thrive, is a relic of World War II explosives production. This manifestation of the “military-agricultural-industrial complex” is also carbon intensive since it is made from natural gas.

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AskPablo: CO2 from Beer

| Monday June 25th, 2007 | 11 Comments

duff.jpgHave you ever wondered about the carbon emissions generated from making your favorite brewsky, bottle of vino, or 15 year-old Talisker Scotch? Never mind the impact from producing the bottles, shipping the product, or the farm impact–I’ve written about those before (See: AskPablo: Exotic Bottled Water, AskPablo: Glass vs. PET Bottles, and AskPablo: Foodmiles) But what about the fermentation process? That is what we will explore this week on AskPablo.

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