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The article presents information on the jubilee symposium convened to mark the 25th Anniversary of the founding of Unit of Comparative Plant Ecology at Sheffield University in Sheffield, England, which fell on October 1, 1986. Topics discussed were a reflection of the Unit's current interests and included overviews of recent work and predictions for the future, both from past and present members of the Unit and from invited speakers. Seventeen papers presented here were delivered to 160 delegates from 15 countries. The main theme of papers presented was interspecific variation in the form and functions of plants, particularly in relation to environmental factor.

Information about several papers discussed at the 29th New Phytologist Symposium: Stomata in Manchester, England in July 2012 on the global impact of stomatic pores and guard cells is presented. Topics include stomatal development and evolution, climate models and improved crop production. Its logo is also provided which shows the role of such cells in regulating worldwide issues such as climate change and breeding of sustainable crop.

A two-day discussion Meeting of the Royal Society, "The Nitrogen (N) Cycle," held in London, England in June 1991. The author reviewed the considerable progress made in understanding the N cycle in agricultural, forest and aquatic systems. The meeting included some discussion of the concerns which were already being expressed at that time over nitrate in water supplies, and the impacts of nitrogenous gases on tropospheric chemistry, the greenhouse effect and the ozone layer. Since then, disquiet over the impacts of nitrogenous compounds on the environment has increased, and numerous papers have been published on many aspects of the problem.