Diet, Energy, and Global Warming

2006 ◽  
Vol 10 (9) ◽  
pp. 1-17 ◽  
Author(s):  
Gidon Eshel ◽  
Pamela A. Martin

Abstract The energy consumption of animal- and plant-based diets and, more broadly, the range of energetic planetary footprints spanned by reasonable dietary choices are compared. It is demonstrated that the greenhouse gas emissions of various diets vary by as much as the difference between owning an average sedan versus a sport-utility vehicle under typical driving conditions. The authors conclude with a brief review of the safety of plant-based diets, and find no reasons for concern.

2021 ◽  
Vol 117 (2) ◽  
pp. 1
Author(s):  
Seyed Saeed HOSSEINI ◽  
Hassan FEIZI ◽  
Hamed KAVEH ◽  
Hossein SAHABI

With the aim of evaluation and comparison of the greenhouse gas emissions from soybean and tangerine production in Golestan province, Iran, a pilot experiment was carried out. In this experiment, 43 fields of soybeans and 43 orchard tangerines were selected by various management in the province using questionnaires. The greenhouse gas emissions were examined using the Global Warming Potential (GWP). The results of this study showed that fossil fuel was the highest energy consumption in the production of soybeans (6906.5 MJ ha-1) and tangerines (17205.1 MJ ha-1). The lowest amount of energy consumption among inputs was related to micro fertilizers, that was 9 MJ ha-1 for soybeans and 17.6 MJ ha-1 for tangerine. In both of production system, the most energy consumed was shown for the harvesting sector. Irrigation and planting were the highest contributors to greenhouse gas emissions in soybean field by 387.7 and 109.4 kg CO2 ha-1, respectively; while in the tangerine production, the most greenhouse gas emissions were related to irrigation and harvesting process by 5828.4 and 394.7 kg CO2 ha-1. In general, input energy in soybean and tangerine were 17512.8 and 33879.8 MJ ha-1, total output energy was calculated 48310.5 and 105463 MJ ha-1. Finally, the energy use efficiency was computed for soybean and tangerine 2.9 and 3.3, respectively.


Author(s):  
Betty J. Diener ◽  
William P. Frank

It is likely that the future environment of our globe depends on the actions taken by China and India as they develop into two of the three largest economies in the world over the next twenty-five years.  The global warming problem alone will be dominated by the total greenhouse gas emissions from these two countries.  This article summarizes the economic growth of these two countries, the resulting increasing environmental problems, the trends and impacts of increased energy consumption, the trends and impacts of greenhouse gas emissions, and the potential for reducing these impacts, should the two countries have the will to do so.


2021 ◽  
Vol 17 (1) ◽  
pp. 1-16
Author(s):  
Asim Hasan ◽  
Rahil Akhtar Usmani

Rising greenhouse gas emissions is an important issue of the current time. India’s massive greenhouse gas emissions is ranked third globally. The escalating energy demand in the country has opened the gateway for further increase in emissions. Recent studies suggest strong nexus between energy consumption, economic growth, and carbon emissions. This study has the objective to empirically test the aforementioned interdependencies. The co-integration test and multivariate vector error correction model (VECM) are used for the analysis and the Granger Causality test is used to establish the direction of causality. The time-series data for the period of 1971–2011 is used for the analysis. The results of the study confirm strong co-integration between variables. The causality results show that economic growth exerts a causal influence on carbon emissions, energy consumption exerts a causal influence on economic growth, and carbon emissions exert a causal influence on economic growth. Based on the results, the study suggests a policy that focuses on energy conservation and gradual replacement of fossil fuels with renewable energy sources, which would be beneficial for the environment and the society.


Robotics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 33
Author(s):  
Florian Stuhlenmiller ◽  
Steffi Weyand ◽  
Jens Jungblut ◽  
Liselotte Schebek ◽  
Debora Clever ◽  
...  

Modern industry benefits from the automation capabilities and flexibility of robots. Consequently, the performance depends on the individual task, robot and trajectory, while application periods of several years lead to a significant impact of the use phase on the resource efficiency. In this work, simulation models predicting a robot’s energy consumption are extended by an estimation of the reliability, enabling the consideration of maintenance to enhance the assessment of the application’s life cycle costs. Furthermore, a life cycle assessment yields the greenhouse gas emissions for the individual application. Potential benefits of the combination of motion simulation and cost analysis are highlighted by the application to an exemplary system. For the selected application, the consumed energy has a distinct impact on greenhouse gas emissions, while acquisition costs govern life cycle costs. Low cycle times result in reduced costs per workpiece, however, for short cycle times and higher payloads, the probability of required spare parts distinctly increases for two critical robotic joints. Hence, the analysis of energy consumption and reliability, in combination with maintenance, life cycle costing and life cycle assessment, can provide additional information to improve the resource efficiency.


2021 ◽  
Vol 35 (2) ◽  
pp. 225-237
Author(s):  
Feng Gao ◽  
Tongwen Wu ◽  
Jie Zhang ◽  
Aixue Hu ◽  
Gerald A. Meehl

2022 ◽  
Vol 3 (1) ◽  
pp. 17-29
Author(s):  
Cory Swanson ◽  

To what degree do serious issues require serious consequences for politicians who fail to address them? Should politicians who fail to keep campaign promises have greater consequences than not being reelected? In this work of philosophical short story fiction, Brian Greenwald is running a unique presidential campaign. Not only is he a single-issue candidate for stopping global warming, but an ominous figure follows him everywhere with the promise to kill him at the end of his term if he fails to move the needle. The electorate knows this, and elects Greenwald President in a landslide. Everything he does in office is focused on the single goal of lower greenhouse gas emissions. At the end of his first term emissions have gone flat, but not down. By the end of his second term, even after exceptional efforts, global greenhouse gas emissions have failed to significantly fall. Good to his word, the ominous figure kills him for failing to deliver.


2012 ◽  
Vol 20 (1) ◽  
pp. 35-40
Author(s):  
S. Štefunková

Characteristics of asphalt mixes with FT additiveThis article is focused on low-temperature asphalt mixture technologies using FT additive and RAP. The modern production and use of asphalt mixture technologies with reduced temperatures has many advantages. These advantages mainly help to save energy and the environment. Lower temperatures enable a reduction in energy consumption, a more acceptable working environment for workers, a reduction in negative environmental effects, such as greenhouse gas emissions, and an improvement in the workability of mixtures and a prolongation of their duration. This technology is currently becoming popular in many countries.


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