The Known Knowns of Climate Change

The philosopher Daniel Dennett once compared science to the construction of a huge pyramid. It is an apt metaphor for climate-change research, and one worth bearing in mind with the publication of the latest report of the UN Intergovernmental Panel on Climate Change.

POTSDAM – The philosopher Daniel Dennett once compared science to the construction of a huge pyramid. Its base comprises the mass of well-established knowledge – no longer controversial and seldom discussed outside academia. More recent research is piled toward the top of the pyramid, where most public debate takes place. It is an apt metaphor for climate-change research, and one worth bearing in mind with the publication of the latest report of the United Nations Intergovernmental Panel on Climate Change (IPCC).

The IPCC’s fifth report, the product of several years of work by hundreds of climate scientists around the world, reviews our established understanding of climate change and explains more recent findings. The media understandably tend to focus on the latter – like the much higher sea-level rise predictions compared to the previous IPCC report of 2007. But let us step back from the news cycle to look at the solid knowledge base of our pyramid.

Climate research dates back at least two centuries, to Joseph Fourier’s discovery of the effects of greenhouse gases on planetary climates; in 1859, John Tyndall demonstrated in his laboratory which gases cause this effect. Detailed radiation measurements on the ground and from satellites have since proved the greenhouse effect’s existence.

To continue reading, please log in or enter your email address.

Registration is quick and easy and requires only your email address. If you already have an account with us, please log in. Or subscribe now for unlimited access.

required

Log in

http://prosyn.org/QEnGnLs;
  1. China corruption Isaac Lawrence/Getty Images

    The Next Battle in China’s War on Corruption

    • Chinese President Xi Jinping knows well the threat that corruption poses to the authority of the Communist Party of China and the state it controls. 
    • But moving beyond Xi's anti-corruption purge to build robust and lasting anti-graft institutions will not be easy, owing to enduring opportunities for bureaucratic capture.
  2. Italy unemployed demonstration SalvatoreEsposito/Barcroftimages / Barcroft Media via Getty Images

    Putting Europe’s Long-Term Unemployed Back to Work

    Across the European Union, millions of people who are willing and able to work have been unemployed for a year or longer, at great cost to social cohesion and political stability. If the EU is serious about stopping the rise of populism, it will need to do more to ensure that labor markets are working for everyone.

  3. Latin America market Federico Parra/Getty Images

    A Belt and Road for the Americas?

    In a time of global uncertainty, a vision of “made in the Americas” prosperity provides a unifying agenda for the continent. If implemented, the US could reassert its historical leadership among a group of countries that share its fundamental values, as well as an interest in inclusive economic growth and rising living standards.

  4. Startup office Mladlen Antonov/Getty Images

    How Best to Promote Research and Development

    Clearly, there is something appealing about a start-up-based innovation strategy: it feels democratic, accessible, and so California. But it is definitely not the only way to boost research and development, or even the main way, and it is certainly not the way most major innovations in the US came about during the twentieth century.

  5. Trump Trade speech Bill Pugliano/Getty Images .

    Preparing for the Trump Trade Wars

    In the first 11 months of his presidency, Donald Trump has failed to back up his words – or tweets – with action on a variety of fronts. But the rest of the world's governments, and particularly those in Asia and Europe, would be mistaken to assume that he won't follow through on his promised "America First" trade agenda.