Some observed weather events will have been made more
likely by human influence on climate, some less likely, and it is a legitimate and very important field of scientific enquiry to work out which are which.
Not exact matches
As for whether the world's recent extreme weather was made worse
by human influence, that answer
likely won't be available for years — and only if a research effort similar to the one that analyzed the 2000 U.K. floods is undertaken.
All told, about 20 % of the distribution of domesticated species across the Amazon seemed to be driven
by human influences, while 30 % was
likely due to environmental factors such as soil composition.
By the fifth report in 2013, the IPCC said it was «extremely
likely that
human influence has been the dominant cause of the observed warming since the mid-20th century.»
A new study from the University of Zurich revealed that the honest behavior of
humans can be
influenced by a simple, non-invasive brain stimulation, making them less
likely to cheat.
Anthropocene, as you
likely know, is the term applied increasingly
by a range of scientists and others to this period in Earth and
human history in which our species is
influencing a host of planetary systems in big ways with long - lasting consequences.
It is extremely
likely that more than half of the global mean temperature increase since 1951 was caused
by human influence on climate (high confidence).
The increasing severity of Australian heat waves are part of a long - term global trend towards more heat waves and hot weather in many regions, a trend that is very
likely influenced by human - driven climate change.
Since people's beliefs about evolution are
influenced by their perceptions of scientific consensus, the total role of science knowledge in shaping a person's opinion
likely operates indirectly through beliefs about scientific consensus as well as directly through beliefs about whether
humans have evolved over time.
The most recent report of the International Panel on Climate Change says it is extremely
likely that
human influence has been the dominant cause of this warming which is driven
by the build up of carbon dioxide emissions from fossil fuel combustion, cement production, and land use changes.
Distortions of this envelope of the magnitude that are underway and in prospect are
likely to so badly disrupt the environmental conditions and processes
influenced by climate as to adversely affect every dimension of
human well - being that is tied to the environment...
This Synthesis Report repeats with greater certainty findings that have figured prominently in earlier IPCC assessments, that the Earth's climate is warming «unequivocally,» that the
human influence in this process is «clear» and that the changing climate is very
likely to bring impacts:» [w] ithout additional mitigation efforts beyond those in place today, and even with adaptation, warming
by the end of the 21st century will lead to high to very high risk of severe, widespread, and irreversible impacts globally.»
Increased global temperatures caused
by anthropogenic greenhouse gases are extremely
likely to have played at least some role in more than four out of five flooding days from Key West to Fernandina, Florida, and the study indicates that at the locations analyzed, more than 3,500 flood days since 1950 would not have occurred without
human influence.
Again, the approach adopted
by the Court of Justice on this question is
likely to be
influenced by the equivalent case law of the European Court of
Human Rights.
However, because it was decided
by an appellate court, it is
likely to
influence decisions made under
human rights legislation in all Canadian jurisdictions, particularly those involving employer drug use policies in safety sensitive workplaces.
The social
influence model86 is also a useful conceptual framework to guide development of media interventions, as it highlights the core principles that promote successful persuasion and
influence; for example, to the extent that interventions make use of the power of social validation
by similar or liked others (i.e. «others like me are doing it») and of
humans» tendency to act in accordance with prior commitments to others and to deep - seated values, they are
likely to have more
influence on viewers» attitudes, intents and behaviours.