Climate change is arguably the most severe challenge facing
our planet during the 21st century. Human interference with
the climate system (mainly through the emission of greenhouse gases and changes in land use) has increased the global
and annual mean air temperature at the Earth’s surface by
roughly 0.8 °C since the 19th century (IPCC, 2013). The year
2014 was the hottest one on record so far (NOAA, 2015a),
and at the time of writing, 2015 appears to be on track to set
a new record (NOAA, 2015b). This trend of increasing temperatures will continue into the future: by 2100, the globe
could warm by another 4 °C or so if emissions are not decisively reduced within the next decades (IPCC, 2013). There
is broad agreement that a warming of this magnitude would
have profound impacts both on the environment and on
human societies (IPCC, 2014a), and that climate change mitigation via a transformation to decarbonized economies and
societies has to be achieved to prevent the worst of these
impacts (IPCC, 2014b).
The spatial and temporal extent of the climate challenge
deeply connects it to ethical questions as well. These arise both
from the fact that the poorest people on Earth are not signifi-
cantly contributing to global emissions, but may well feel the
impacts most severely, and from the long-term commitment
to future warming and climate change impacts – like sea level
or the partial melting of the large ice sheets – which will be felt
by future generations. In essence, past and future greenhouse
gas emissions seriously affect a large fraction of the still growing human population on our planet and profoundly shape the
environment in which our children and grandchildren will
have to live in. Humanity therefore has a moral obligation to
address the climate challenge. This will have to combine successful negotiations on a binding and effective international
climate agreement and bottom-up initiatives from individuals
or communities.
There is a wide range of global threats that certainly require
humanity’s urgent attention (see the recent report by the
World Economic Forum, 2015). These global risks include water, food and energy security, population growth, infectious
diseases, and international security, for example. However,
climate change is often regarded as one of the most profound
global problems. This is mainly due to the sheer scale of
climate change impacts – both in terms of its global and temporal spread and of the variety of sectors affected by it – that
sets it apart from other planetary challenges. Indeed, recent
high-level initiatives highlight the importance of climate
change, including the ground-breaking encyclical of Pope
Francis, the G7 countries’ pledge to phase out fossil fuels or
Barack Obama’s new climate mitigation proposal.
But climate change cannot be considered isolated from other
challenges. Indeed, climate change is a truly cross-cutting issue
affecting many sectors and connected to other global challenges. For example, climate change has the potential to impact
global water supplies, agricultural production, human health,
and our energy infrastructure. In turn, the way in which we
produce our energy and food has a profound effect on the
Earth’s climate system. Finally, the impacts of policies in one
of the fields on the other challenges need to be explored if truly
sustainable solutions to global problems shall be achieved.
These close connections – and the societal and technical challenges of climate mitigation (IPCC 2014b) and adaptation
(IPCC 2014a) – require interdisciplinary and transdisciplinary
thinking; we hope that our new journal Global Challenges can
serve as a highly visible forum for research bridging classical
scientific disciplines, for ideas which have the potential to directly influence future climate policy and for discussions about
new research and different policy options.
Within the climate change focus of Global Challenges, we
therefore invite submissions related to climate change of the
highest quality, with a clear focus on the global view of the
climate problem and with relevance for (global) climate policy
or bottom-up initiatives which are a significant step towards a
solution of the climate challenge. We explicitly invite submissions connecting climate change to the other challenges
covered by the journal. In addition to original research papers,
we will regularly commission commentary pieces and review
articles highlighting the most relevant recent developments
in climate research and policy as well as the most exciting open
research questions.
I firmly believe that a journal like Global Challenges with its
broad scope, its cross-cutting nature, its focus on policy relevance, and its open-access publication model is an important
and innovative outlet for high-quality research work on global
problems in general. Concerning climate change in particular,
I am looking forward to working with the editorial team, the staff
at Wiley and the global climate science community to develop
Global Challenges into one of the major journals in the field.
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