There are past and present public debates over certain aspects of climate change: how much has occurred in modern times,
what causes it, what
its effects will be, and what action should be taken to curb it now or later, and so forth. In the
scientific literature
Scientific literature encompasses a vast body of academic papers that spans various disciplines within the natural and social sciences. It primarily consists of academic papers that present original empirical research and theoretical ...
, there is a
very strong consensus that global surface temperatures have increased in recent decades and that the trend is caused by human-induced emissions of
greenhouse gas
Greenhouse gases (GHGs) are the gases in the atmosphere that raise the surface temperature of planets such as the Earth. Unlike other gases, greenhouse gases absorb the radiations that a planet emits, resulting in the greenhouse effect. T ...
es.
The controversies are, by now, mostly political rather than scientific: there is a scientific consensus that global warming is happening and is caused by human activity. Public debates that also reflect scientific debate include estimates of how responsive the climate system might be to any given level of greenhouse gases (
climate sensitivity). Disputes over the key scientific facts of global warming are more prevalent in the
media
Media may refer to:
Communication
* Means of communication, tools and channels used to deliver information or data
** Advertising media, various media, content, buying and placement for advertising
** Interactive media, media that is inter ...
than in the scientific literature, where such issues are treated as resolved, and such disputes are more prevalent in the
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
and
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
than
globally.
Debates around details in the science
There have been many debates around the details of climate change science.
Climate change deniers and "skeptics" tend to
cherry-pick data or studies, and then trump up any scientific discussions or apparent discrepancies that match with their agenda. Many of those apparent discrepancies have been reconciled in the meantime,
climate models have become more accurate, the
scientific consensus on climate change
There is a nearly unanimous scientific consensus that the Earth has been consistently warming since the start of the Industrial Revolution, that the rate of recent warming is largely unprecedented, and that this warming is mainly the result o ...
has strengthened and so forth. For example, climatologist
Kevin E. Trenberth has published widely on the topic of
climate variability and has exposed flaws in the publications of other scientists.
For past debates and controversies on scientific details see for example:
*
History of climate change science#Discredited theories and reconciled apparent discrepancies
*
Climate change denial#Discussing specific aspects of climate change science
*
Intergovernmental Panel on Climate Change#Challenges and controversies (the
IPCC
The Intergovernmental Panel on Climate Change (IPCC) is an intergovernmental body of the United Nations. Its job is to "provide governments at all levels with scientific information that they can use to develop climate policies". The World M ...
assessment reports, like the most recent
IPCC Sixth Assessment Report
The Sixth Assessment Report (AR6) of the United Nations (UN) Intergovernmental Panel on Climate Change (IPCC) is the sixth in a series of reports which assess the available scientific information on climate change. Three Working Groups (WGI, II, ...
summarise the state of the art of climate science at the time).
Debates over most effective response to warming
There have been debates on the best responses to slow global warming, and their timing. The debates are around the specific actions for
climate change mitigation
Climate change mitigation (or decarbonisation) is action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include energy conservation, conserving energy and Fossil fuel phase-out, repl ...
and
climate change adaptation
Climate change adaptation is the process of adjusting to the effects of climate change, both current and anticipated.IPCC, 2022Annex II: Glossary , or climate action">öller, V., R. van Diemen, J.B.R. Matthews, C. Méndez, S. Semenov, J.S. Fuglestvedt, A. Reisinger ...
, or climate action in general. See for example:
*Economic analysis of climate change
*Climate change denial#Delaying climate change mitigation measures
*Climate change denial#Pushing for adaptation only
*Climate action (Climate crisis)