For weeks, the debate on climate change takes place on the streets. For many years the subject deals with the science – the climate in Switzerland Philippe Thalmann (56) economists of the EPFL. GLANCE reached him in Berlin. There he is to speak at a Workshop about the Swiss experience with the CO2 levy.

VIEW: We conduct this Interview in writing, you are on the move – climate-friendly by train?

With the night train. Basically, I travel in Europe by train.

over ten years Ago, an expert report has estimated the cost of climate change. If we do nothing, it will cost us annually at least 5 percent of the world’s gross domestic product. How does it look today?

Of the many global effects of climate change on a number, it is difficult. And hardly anyone could make something out of it. Clearly should be: The loss of livelihoods hits millions of people and will lead to forced migrations. Glaciers, coral reefs, or ways of life that shrinkage, have a high value, even if there are no prices.

What is the climate change will cost Switzerland? To expect

more extreme weather events such as heat waves and droughts are natural hazards such as Floods. All of this is at risk life in addition to possessions, even people. My research team and I have been trying to rate as many as possible for Switzerland, by 2060, the projected consequences. Our result: six billion Swiss francs in the case of climate change continues unabated. To quantify everything, but it is impossible. Therefore, the total costs are expected to be more realistic in the case of ten billion Swiss francs.

What comes to us so expensive?

In Switzerland, is the largest cost item is the loss of life. In the hot summers of 2003 and 2015, approximately 1000, respectively, 800 people died premature, incidentally, also children. Today’s heat of summer in a few decades, normal. In the summer of 2060 is likely to die, therefore, similar to many people. Although we can, of course, to learn and to adjust.

As you come to six billion?

A life according to the Covenant of 6.5 million Swiss francs in value. 800 people die because of the heat, it will cost 5.2 billion Swiss francs. A further two billion because we are less productive. Positive, in contrast, is likely to have an impact of climate change on the Heating and the summer tourism. At the end of the six billion Swiss francs.

How it looks in other countries?

In each country, the effects are different. In many of the biggest losses in agriculture, in other coastal areas.

Does the world in the fight against climate change, because it is too expensive?

doing nothing is cheaper today, but tomorrow will be much more expensive. Several Swiss teams of researchers have simulated what it means technically and economically, if we reduce the consumption of fossil energy by 2050, a massive. Conclusion: Our household income would fall by one percent. You would calculate the gains in quality of life due to less noise and air pollution, would be this number is much smaller. Overall, it costs us not so much. But individual sectors have been strong, and we need to change our consumption habits.

? the economy when it comes to climate change, the tendency to tackle first, the cost measures, and to postpone the more expensive later

Often the image of the fruit tree is tried: We pick first the easily accessible fruits and then those that require a ladder. This is understandable, and was for a long time in climate protection than is optimal: as Long as you know how much mitigation is necessary, should you just implement the cheapest measures. Today we know that It is all the fruit to be picked. We take only the lower, need to increase our children on the head. Particularly reprehensible, this approach is abroad: We have cheap reduction measures are very cheaply bought, and now people have to pay the expensive measures.

In Switzerland, when you Live and Build relatively a lot has been done during Transport, however, little. Why?

fortunately, the Swiss loves his oil heating as much as his car! This is a bundle of support measures in buildings: on the one hand, the CO2 levy increases the cost of Heating with Oil and Gas, on the other hand, subsidies for improved insulation of buildings and renewable heat. In addition, much training and Information. All of this is missing in the car. The advertising for heavy cars and the associated and suggested security and freedom drown out all other messages.

What measures to take us forward?

We need in climate policy to a new Story: a Narrative of a future without fossil fuels will look like and how we get there. Maybe the students will be designing this story for all of us.

Philippe Thalmann (56) is since 1994 an associate Professor of the Economics of natural and built environment at the Swiss Federal Institute of technology Lausanne. He has held the chair for environmental and urban Economics. His research focus is on environmental and climate policy. For the climate he is also engaged in person: On Friday, he wants to March with the students.

In the large climate-series of VIEWS is considered to be the global threat of climate change from all perspectives.

The most important terms clearly explained.
Which Nations are the largest polluters in the world?
These Swiss companies to damage the climate at the most.
What Airlines and airports are doing to combat climate change?
Is a vegan diet really better for the environment?
The science policy provides for the responsibility.
How to change climate change in Switzerland?
So much of the Kllimawandel