The Current Opinion journals were developed out of the recognition that it is increasingly difficult for specialists to keep up to date with the expanding volume of information published in their subject. In Current Opinion in Environmental Sustainability, we help the reader by providing in a systematic manner:

1. The views of experts on current advances in environmental sustainability in a clear and readable form.
2. Evaluations of the most interesting papers, annotated by experts, from the great wealth of original publications.

Current Opinion in Environmental Sustainability aims to track the emergence of a new innovative sustainability science discipline by integrating across regional and global systems with their typical dimensions, human-environment interactions and management challenges. Current Opinion in Environmental Sustainability thus emphasises the actual interdisciplinary sustainability research approaches, the solutions it provides and their dissemination and application.

Current Opinion in Environmental Sustainability aims to stimulate scientifically grounded, interdisciplinary, multi-scale debate and exchange of ideas. It will contain polished, concise and timely review and synthesis papers. Additionally, Current Opinion in Environmental Sustainability will continue to publish papers on strategic research plans of Future Earth (http://www.icsu.org/future-earth) and related global-change projects. It will thus serve as an invaluable source of information for researchers, lecturers, teachers, professionals, policy makers and students.

The subject of environmental sustainability is divided into 6 themed annual issues. Each theme helps to identify, understand and solve sustainability problems and are not mutually exclusive. The overlap results from the actual complexity of combining all the sustainability science dimensions and approaches. The themes are:

1. Environmental change issues;
2. Environmental change assessments;
3. System dynamics and sustainability;
4. Sustainability governance and transformation;
5. Sustainability challenges;
6. Sustainability science.

This set allows for flexible integration of natural sciences with the social sciences, humanities and engineering disciplines. The themes focus on major global-change systems and problems (Themes 1-3), the emerging new transdisciplinary sustainability science, as generated in Future Earth or as part of the evolving UN's sustainable development goals (Themes 4 and 5) and a more philosophical reflection on approaches of sustainability science (Theme 6).

Selection of topics to be reviewed:
Section Editors, who are major authorities in the field, are appointed by the Editors of the journal. They divide their section into a number of topics, ensuring that the field is comprehensively covered and that all issues of current importance are emphasised. Section Editors commission reviews from authorities on each topic that they have selected.

Reviews:
Authors write short review articles in which they present recent developments in their subject, emphasising the aspects that, in their opinion, are most important. In addition, they provide short annotations to the papers that they consider to be most interesting from all those published in their topic over the previous year.

Editorial Overview:
Section Editors write a short overview at the beginning of the section to introduce the reviews and to draw the reader's attention to any particularly interesting developments.

Ethics in Publishing: General Statement:
The Editor(s) and Publisher of this Journal believe that there are fundamental principles underlying scholarly or professional publishing. While this may not amount to a formal 'code of conduct', these fundamental principles with respect to the authors' paper are that the paper should:

i) be the authors' own original work, which has not been previously published elsewhere;
ii) reflect the authors' own research and analysis and do so in a truthful and complete manner;
iii) properly credit the meaningful contributions of co-authors and co-researchers;
iv) iv) not be submitted to more than one journal for consideration; and
v) be appropriately placed in the context of prior and existing research.

Of equal importance are ethical guidelines dealing with research methods and research funding, including issues dealing with informed consent, research subject privacy rights, conflicts of interest, and sources of funding. While it may not be possible to draft a 'code' that applies adequately to all instances and circumstances, we believe it useful to outline our expectations of authors and procedures that the Journal will employ in the event of questions concerning author conduct.

With respect to conflicts of interest, the Publisher now requires authors to declare any conflicts of interest that relate to papers accepted for publication in this Journal. A conflict of interest may exist when an author or the author's institution has a financial or other relationship with other people or organizations that may inappropriately influence the author's work. A conflict can be actual or potential and full disclosure to the Journal is the safest course. All submissions to the Journal must include disclosure of all relationships that could be viewed as presenting a potential conflict of interest. The Journal may use such information as a basis for editorial decisions and may publish such disclosures if they are believed to be important to readers in judging the manuscript. A decision may be made by the Journal not to publish on the basis of the declared conflict.

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