Category: Emission reduction

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Harvard has $42 billion in investments, but still not divesting from fossil fuels

With an endowment, to rival a host of small countries, the clout that Harvard should have in terms of divesting from fossil fuels could be vast.

Unfortunately they are dragging their feet. Apart from the bad look that this give, it is also a highly dangerous way of working – there is an increasing concern that many fossil fuel companies will be left holding vast rights to drill will be worthless as they wont be able to sell the oil.

If all cars and lorries go electric (and it is looking increasingly like it will, and faster than expected) this will cut out the bottom of the oil market. Also with kites and sails, ships are increasingly going electric and renewable, and even planes are getting in on the act oil might become less and less useful.

It has already been shown, that it is cheaper to set up a solar or wind farm than it is to continue to burn coal or oil until the end of the powerplants life – as the numbers move even further, it is going to become impossible to ignore.

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Reducing the carbon footprint of trade by sea

While proportionally a small percentage of human emissions, the emissions of seafaring trade currently amounts to roughly 2% of our emissions.

The thing is, that with the huge advances in wind technology it would be possible to save a great deal of money and emissions.

A recent test of a ship kite, was found to save 10-15% (the creater of one of these systems suggested saving of 20% or more) of the fuel per day, a saving of $1000-1500 – which is quite something. While the kite systems currently cost a million or so, this will still be paid of in a couple of years. Furthermore this price is likely to fall as the technology becomes more mainstream.

Cargo ship being pulled by a kite photo by Yves Parlier click for licence details

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Is one of our carbon sinks less reliable than we thought?

The human race has been emitting carbon at an extreme rate for several centuries. Before we started burning things for the energy locked up inside them, the worlds carbon sinks and its carbon taps were in relatively stable harmony. For long periods of the earths existence, carbon absorbed by plants equalled the carbon emitted by breathing and volcano eruptions among other sources.

There are a variety of other carbon sinks. The earths oceans absorb carbon, while they can absorb huge quantities of carbon, this acidifies the water, which means that we dont want to rely on that to to great an impact.

Continue reading “Is one of our carbon sinks less reliable than we thought?”
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Global warming is happening, and even with the cuts promised, we are likely to see significant sea level rises: what is this likely to cost

It is an unfortunate fact, all over the world, that people have chosen to live near the sea. There are many reasons for this, but the basic fact is that this is often the most productive land.

The problem now, though, is that all these peoples lives are liable to change. This is because small rises in sea levels could make them homeless. As much as 1 billion people live at low enough elevation to make this a threat.

Countries like Bangladesh are very flat, and it is estimated that as many as 20 million people within Bangladesh would become homeless by 2050 under current trends (this assumes that we meet our carbon cut targets. There would be many others that would be lost.

Forgetting the hundreds of millions of people in the developing world, there are famous buildings and places which should underline this issue in the west as well.

Buckingham palace would be under water up to the first floor if we fail to act. A temperature rise of 1.5 degrees C would merely bring the water level to the front door. Many other famous buildings such as the pentagon, the tower of London and Tokyo tower in Japan would all be lost.

This is all a long winded way of stating, that even with the dramatic cuts the world is hoping to make over the next few decades, many people on earth are still likely to loose their lives have their lives changed dramatically, in most cases for the worse.

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The former head of the British financial services authority has suggested population decline and smaller families are good for the Climate; and?…

According to Lord Adair Turner, population decline should not be feared. It is certainly true that if the population of the UK were to shrink, so would our carbon emissions. Of course, this suggestion might have come with more authority if it had been made while he was still in post.

We have, in the last couple of centuries, unfortunately set up the financial world in such a way as to need a growing population. An increasing size of financial market in each country is required (according to current expertise) yet while there are some gains to be had in efficiency by each person, it is not possible for people to become more efficient endlessly. Furthermore, by this metric, a falling population would be a bad thing, as this would necessitate a shrinking market – even if it were shrinking slower than the population.

Continue reading “The former head of the British financial services authority has suggested population decline and smaller families are good for the Climate; and?…”
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Will Cop26 over shadow Kunming?

Cop26 is essential, there is no doubt, however there is a similarly important threat that the world is facing, and if we are not careful we wont start fighting it until it is too late.

What is Kunming there to fight? It is there to fight loss of biodiversity. Biodiversity is essential for the well running of ecosystems around the world which can often collapse without enough biodiversity.

Indeed, it is actually a problem that Kunming and Cop26 have been split. What we need is for the two fights to be fought side by side.

I have written in the past, about the problems for the Congo rainforest that have been caused by the local extinction of forest elephants. Without many of the wild animals that exist in these landscapes the forests and peat lands and grass lands will fail, releasing their huge carbon stocks back into the air.

These two must be tied together

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Only 10% of the $17 trillion spent on Covid recovery went toward projects that would cut carbon emissions and restore nature

There is a constant complaint from vested interests, that the price of greening the world economy is just too high. Of course, when the world-wide economy needs a boost, these concerns go out of the window (until the emergency is over, then even these costs might be used to argue against saving the planet).

Continue reading “Only 10% of the $17 trillion spent on Covid recovery went toward projects that would cut carbon emissions and restore nature”
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A tesla plane? what impact would this have

Elon Musk has talked about creating an electric plane, I think that this is a fantastic idea, but not from a tesla fanboy point of view.

Electric planes are in their infancy. There are a range of extremely light weight aircraft for learning to fly. There are also an increasing number of island hopper jets, which can allow easy access for small communities – at prices that are affordable, and therefore long-term as well as the far more environmentally friendly setup.

The other big move in this arena, is Ryanair. They are a budget airline operating throughout Europe, but they are building an aircraft which should be able to carry 186 people (31 rows of 6 seats) that would cover 80% of their routes. My hope is that this is a move into them behaving in a more compassionate way – they have a reputation of treating people poorly (I have experienced that first hand but that is another story)

Elon Musk envisaged a vertical take off and landing aircraft, and one which would fly high enough to travel at supersonic speeds. He did state that he thought batteries needed to reach 400wh/kg and the batteries that run tesla cars are currently 260wh/kg, so were still some way off. Having said that, tesla has some of the best battery research going on, and they are confident that the batteries will be ready in the next 3 or so years.

So what impact would a tesla plane have? Well what Musk is describing is largely a private jet, not a passenger jet. Never-the-less Tesla cars started and high cost and came down. It is likely that a Tesla plane would do something similar. Certainly, with the weight Tesla can bring to bare, it is likely that any involvement by Tesla would push the electrical aviation market place to new heights.

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