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SPECIAL: Direct CO2 pricing gives room for additional voluntary emissions reductions

Foto: iStockMost climate economist agree that it makes sense to put a price tag on the emission of the most important greenhouse gas carbon dioxide, CO2. The discussion primarily revolves around whether it would be better to achieve this through a tax or emissions trading. Arguments include the administrative effort involved, the signal effect for investors, and the political enforceability. A new study based on a scientifically controlled experiment now sheds light on another aspect that has barely been researched so far: the incentive effect of both options on actors who want to act morally beyond their economic interests. The study was conducted by the economists Axel Ockenfels, Peter Werner and Ottmar Edenhofer, and has now been published in the renowned journal Nature Sustainability. Read more...

From artificial meat to fine-tuning photosynthesis: Food System Innovation – and how to get there

From artificial meat to fine-tuning photosynthesis: Food System Innovation – and how to get there

19/05/2020 - Food production has always shaped the lives of humans and the surface of the Earth. Be it plough or refrigerator, time and again innovations have transformed the ways we grow, process, and consume food over the last millennia. Today, with almost 40 per cent of all land on Earth used for food production, the food system massively impacts climate and environment – from nitrogen flows to water use, from biodiversity to greenhouse gas emissions. In a new study published in the journal NatureFOOD, an international team of researchers has now assessed and categorised key innovations with a potential to transform the food system, from artificial meat or seafood to biofortified crops or improved climate forecasts – and established what is most needed to make them succeed.

From artificial meat to fine-tuning photosynthesis: Food System Innovation – and how to get there - Read More…

Delayed monsoon onset in Central India: early warning forecast

Delayed monsoon onset in Central India: early warning forecast

12/05/2020 - Summer Monsoon in Central India will likely begin between 18th and 26 of June, according to the new early forecast developed at the Potsdam Institute for Climate Impact Research (PIK). Led by PIK expert Elena Surovyatkina, the Monsoon forecast method showed to be successful already four years in a row. With global warming the monsoon is changing, breaking well-established “rules” of the phenomenon and thus becoming more unpredictable. A raising demand for a new understanding of the Indian Monsoon in order to be better prepared makes long-term forecasting even more important.

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 Sea level could rise more than 1 metre by 2100 if emission targets are not met, reveals survey amongst 100 experts

Sea level could rise more than 1 metre by 2100 if emission targets are not met, reveals survey amongst 100 experts

08/05/2020 - Global mean sea-level rise could exceed 1 metres by 2100 and 5 metres by 2300 with unchecked emissions, a survey among 100 leading international experts finds. The risk assessment is based on the increasing body of knowledge of the systems involved – while the scientists highlight the remaining uncertainties, they say it is clear now that previous sea-level rise estimates have been too low. The study led by scientists of Nanyang Technological University, Singapore (NTU Singapore) appears today in the Nature partner journal Climate and Atmospheric Science.

Sea level could rise more than 1 metre by 2100 if emission targets are not met, reveals survey amongst 100 experts - Read More…

Petersberg Dialogue: Merkel speech on climate "an important reassurance"

Petersberg Dialogue: Merkel speech on climate "an important reassurance"

29/04/2020 - This week, international decision-makers met online for the Petersberg Climate Dialogue. Germany's head of government Angela Merkel in her speech reaffirmed her commitment to climate stabilization. "This is an important reassurance in the midst of the global health crisis", comment the Directors of the Potsdam-Institute for Climate Impact Research.

Petersberg Dialogue: Merkel speech on climate "an important reassurance" - Read More…

Five years after the Paris Agreement: Large gap between promises and current implementation

Five years after the Paris Agreement: Large gap between promises and current implementation

29/04/2020 - Achieving the overall goals of the Paris Agreement will require a deep reduction in global greenhouse gas emissions, ideally by around 40%–50% by 2030. However, current national implementation of climate policies remains insufficient, yielding only around 5.5% reduction in emissions by 2030. The study was coordinated by PBL Netherlands Environmental Assessment Agency and Utrecht University in cooperation with the Potsdam Institute for Climate Impact Research and was published in Nature Communications. The findings are a contribution to the global evaluation of the Paris Agreement, held during the next three years.

Five years after the Paris Agreement: Large gap between promises and current implementation - Read More…

G20 and climate: Edenhofer speaks at Global Solutions Summit

G20 and climate: Edenhofer speaks at Global Solutions Summit

23/04/2020 - To advance the coupling of economic and environmental prosperity, leading thinkers and doers assembled at this year's Global Solutions Summit. PIK Director Ottmar Edenhofer was invited to deliver a keynote on what the G20 – the world’s largest economies – can do to prepare the road towards the next global climate summit COP26. The focus was on how to ensure functioning global carbon markets. Gunnar Luderer, also from the Potsdam Institute, participated in a panel debate on a circular carbon economy – in fact mitigation options such as storing or re-using CO2 emissions, or using biomass and renewables based-fuels.

G20 and climate: Edenhofer speaks at Global Solutions Summit - Read More…

Digital Earth Day 2020: A Conversation between Greta Thunberg and Johan Rockström from the Nobel Museum

Digital Earth Day 2020: A Conversation between Greta Thunberg and Johan Rockström from the Nobel Museum

April 22, 2020 marked the 50th year since Earth Day was first organised to highlight major environmental challenges in the world. On that day, Greta Thunberg and Johan Rockström have met for a digital conversation about courage, solidarity and opportunities in times of crisis. Greta stressed the need to listen to the science – in both the Corona pandemic and the climate emergency. The talk was hosted by the Nobel Foundation and live-streamed from the Nobel Prize Museum, Stockholm. Over 600 people from all over the world have tuned in, a few thousand watched the recorded version on Youtube, and many media have covered it. The talk is still available online, see link below.

Digital Earth Day 2020: A Conversation between Greta Thunberg and Johan Rockström from the Nobel Museum - Read More…

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