Inventing the future: Energy and the CO2 “greenhouse” effect

Author(s):  
E. E. Davis
Keyword(s):  
2014 ◽  
Vol 7 ◽  
pp. 113-132 ◽  
Author(s):  
Farjana Jahan ◽  
Kazi SM Khasrul Alam Quddusi

Climate change, the effects of greenhouse effect and global warming, is out to alter the global map with its devouring prospects of sending a number of countries under the waves. Unfortunately yet unavoidably, Bangladesh stands at the forefront of climate forays. Its land, water and weather are being severely affected by undesirable climatic changes. Alarmingly, the dangers are to be intensified unless the trend is reversed. However, local initiative will hardly be enough to offset the grave concerns of unintended climatic changes in Bangladesh. The changes will also impact the socio-economic conditions of the country, putting the future of the nation on the line. Some ominous signs are already there for the concerned to respond with required amount of fervour. DOI: http://dx.doi.org/10.3126/dsaj.v7i0.10439 Dhaulagiri Journal of Sociology and Anthropology Vol. 7, 2013; 113-132


2020 ◽  
Author(s):  
Valentina Brombin ◽  
Enrico Calore ◽  
Roberta D'Onofrio ◽  
Claudia Lauro ◽  
Chiara Marchina ◽  
...  

<p>The Sustainable Development Goal 4 of UN 2030 Agenda requires the implementation of education for sustainable development and sustainable lifestyle. In this context, Earth Sciences and related disciplines such as Environmental and Soil Sciences are fundamental teachings in any school to make younger generations aware about the effects of geological processes and human activities on climate change and to achieve possible solutions for sustainability. This aim clashes with the student difficulties in learning geosciences. In particular scientific terminology, abstract concepts, and depth of geological time make Earth Sciences difficult to understand and less attractive than others disciplines (King, 2012). As one of the hardest tasks for students is visualising unseen processes, Inquiry-Based Science Education (IBSE) is one of the best approaches to contrast this trend. This is an empirical learning method, based on “inquiry”, where students are encouraged to solve problems and explain phenomena, performing experiments. Despite in 1996 the USA National Science Education Standards defined IBSE as the best approach in natural science teaching, the majority of European classrooms are not implementing them (Rocard et al., 2007).</p><p>NOVA A.P.S. (Ferrara, Italy) promotes and disseminates STEAM (Science, Technology, Engineering, Arts, Mathematics) disciplines in secondary schools using the IBSE method. To evaluate the success of this approach, NOVA asked ninety 11-year-old students from an Italian school to perform a questionnaire about “Greenhouse gases: nature, potential sources, and effects on climate” after studying the theory with traditional frontal lessons. The questionnaire was proposed again to same group after the application of IBSE approach through its “5E” phases (Engage, Explore, Explain, Elaborate, Evaluate; Bybee, et al., 2006). Students were engaged to confirm the greenhouse theory exploring the phenomena in small different ecosystems built in cut-in-half plastic bottles, partially filled with 1) soil and 2) soil with plants, covered at the top with plastic wrap and exposed to sunlight. Another bottle with soil remained unwrapped to study also the potential effects in “absence of atmosphere”. For each bottle temperature changes and CO<sub>2</sub> emissions were monitored with sensors connected to Arduino boards. The comparison of these parameters in different ecosystems and conditions led students to explain the greenhouse effect and elaborate this concept revealing also i) difference between global warming phenomena and greenhouse effect (a common misconception); ii) relevant role of soils on CO<sub>2</sub> emissions; iii) importance of vegetation in preventing the rising temperature. Finally, students were encouraged to self-evaluate the new acquired knowledge. The future task of this project is creating a sharing platform for teachers, where downloading instructions of the experiment and questionnaire form, and, in turn, uploading feedbacks. Testing and evaluating this method could bring teachers to combine traditional deductive lessons with more practical and stimulating approaches.</p><p> </p><p>Bybee R.W., et al. (2006). The BSCS 5E Instructional Model: Origins, effectiveness and applications. Retrieved from http://www.bscs.org/bscs-5e-instructional-model</p><p> </p><p>King H. (2012). Student difficulties in learning geoscience, Planet, 25, 40-47.</p><p> </p><p>Rocard M., et al. (2007). Science Education NOW: A renewed Pedagogy for the Future of Europe, Luxembourg, Office for Official Publications of the European Communities.</p>


1993 ◽  
Vol 2 (1) ◽  
pp. 71-84 ◽  
Author(s):  
Lee Wilkins

Using as a baseline Herbert Gans' work on values in the news, this qualitative study of US print media coverage of the greenhouse effect between 1987 and 1990 asserts there are at least three additional values that help frame news of the greenhouse effect: progress, the institutionalization of knowledge, and innocence. These values replicate in some crucial ways the values of the scientific community doing research on the greenhouse effect. However, the impact of these values tends to de-emphasize a view of the future and the role of ethical value choices in covering this story, both of which are essential to public understanding of the issue.


1993 ◽  
Vol 20 (4) ◽  
pp. 335-338 ◽  
Author(s):  
John L. Cloudsley-Thompson

Long-term climatic variations over the past 400,000 years, disclose a cyclical alternation of cold or glacial phases. At the present time, the world is experiencing one of its warmer climatic periods. Nevertheless, summer insolation has decreased sharply during the last 9,000 years and, apart from human influences, a gradual reduction in temperature might well be expected to occur during the next 50,000 years. On the other hand, if the human-induced ‘greenhouse effect’ manifests itself as is sometimes forecast, climatic changes will take place much faster, and temperatures could reach higher levels than in any of the post-Pleistocene interglacial phases. The future of the Sahara depends to a considerable extent upon which of these trends actually manifests itself.


1961 ◽  
Vol 13 ◽  
pp. 29-41
Author(s):  
Wm. Markowitz
Keyword(s):  

A symposium on the future of the International Latitude Service (I. L. S.) is to be held in Helsinki in July 1960. My report for the symposium consists of two parts. Part I, denoded (Mk I) was published [1] earlier in 1960 under the title “Latitude and Longitude, and the Secular Motion of the Pole”. Part II is the present paper, denoded (Mk II).


1978 ◽  
Vol 48 ◽  
pp. 387-388
Author(s):  
A. R. Klemola
Keyword(s):  

Second-epoch photographs have now been obtained for nearly 850 of the 1246 fields of the proper motion program with centers at declination -20° and northwards. For the sky at 0° and northward only 130 fields remain to be taken in the next year or two. The 270 southern fields with centers at -5° to -20° remain for the future.


Author(s):  
Godfrey C. Hoskins ◽  
Betty B. Hoskins

Metaphase chromosomes from human and mouse cells in vitro are isolated by micrurgy, fixed, and placed on grids for electron microscopy. Interpretations of electron micrographs by current methods indicate the following structural features.Chromosomal spindle fibrils about 200Å thick form fascicles about 600Å thick, wrapped by dense spiraling fibrils (DSF) less than 100Å thick as they near the kinomere. Such a fascicle joins the future daughter kinomere of each metaphase chromatid with those of adjacent non-homologous chromatids to either side. Thus, four fascicles (SF, 1-4) attach to each metaphase kinomere (K). It is thought that fascicles extend from the kinomere poleward, fray out to let chromosomal fibrils act as traction fibrils against polar fibrils, then regroup to join the adjacent kinomere.


Author(s):  
Nicholas J Severs

In his pioneering demonstration of the potential of freeze-etching in biological systems, Russell Steere assessed the future promise and limitations of the technique with remarkable foresight. Item 2 in his list of inherent difficulties as they then stood stated “The chemical nature of the objects seen in the replica cannot be determined”. This defined a major goal for practitioners of freeze-fracture which, for more than a decade, seemed unattainable. It was not until the introduction of the label-fracture-etch technique in the early 1970s that the mould was broken, and not until the following decade that the full scope of modern freeze-fracture cytochemistry took shape. The culmination of these developments in the 1990s now equips the researcher with a set of effective techniques for routine application in cell and membrane biology.Freeze-fracture cytochemical techniques are all designed to provide information on the chemical nature of structural components revealed by freeze-fracture, but differ in how this is achieved, in precisely what type of information is obtained, and in which types of specimen can be studied.


Sign in / Sign up

Export Citation Format

Share Document