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The world population is growing day by day but the resources are limited. So, on one hand, we have to fulfill our requirements by using resources in an optimized manner, and on the other hand, we are currently in a pandemic for which social distancing is the key to prevent ourselves from the COVID-19 virus. We all travel by bus, train, metros, and other public transports, and we all have faced the problem of overcrowding in public transport once in our life especially during any festive season when there is a lot of rush among people to go from their workplace to their hometown. The problem of overcrowding is very common in developing countries like India where the population is relatively higher than the number of seats in public transports. For instance, if we look at the Delhi metro in which it is almost impossible to travel during the festive season. However, it’s a regular problem, but the crowd becomes more when any festive season approaches. And due to such rush, people tend to just get inside the metro without even searching for a relatively less crowded or vacant seat/compartment, resulting in an unusual pattern of density seen across the metro, somewhere empty and somewhere highly crowded that even no place to stand. And now due to the COVID-19 pandemic, the situation worsens, on one hand, we are bound to travel in-crowd for work and on the other hand, we have to maintain social distancing for COVID prevention. So it becomes almost impossible to travel through such public transport. To solve such problems we are proposing a solution, that is, a system that takes care of the public places/transports by scanning and informing passengers where they can move to find a seat or less crowded. It also helps to ensure social distancing in the times of the COVID-19 pandemic.

The world has faced and overcame lots of viral and bacterial infections and diseases like Chikungunya, Cholera, Crimean-Congo haemorrhagic fever, Ebola virus disease, Hendra virus infection, Lassa fever, Nipah virus infection, Plague, SARS but currently, the world is under the impact of the very recent and much severe novel COVID-19 (2019n-CoV) which is said to have devastating effects on humans and has affected the highest number of population in the history of mankind (https://www.who.int/emergencies/diseases/en/). To help contain the virus from further spread various approaches are being followed across the world as currently, no vaccine is available for the treatment of COVID-19 so the nations are following various preventive measures. Technology can now be seen as a game-changer in this outbreak as it has made things easier for us since the beginning. Some of the advanced technology like AI, IoT, Big Data, Cloud, etc. can make our fight against corona easier, as they can be utilized in healthcare and research effectively to generate astonishing outcomes so as to contain the pandemic. This paper shall focus on describing a few things about how technologies can help diagnose and contain COVID-19.

The world is heading towards the information age where “data is the new gold” and with the increase in the amount of data, there is an overall increment in the resource utilization to manage, manipulate, store and transmit data. Due to the heavy demands of computing resources for the production and application of software and hardware, their disposal is an issue that leads to environmental degradation by causing environmental pollution and keep exhausting natural and energy resources. So, there’s a strong need to adopt the greener and sustainable methods/resources so as to reduce the overall environmental damage due to the above-mentioned factors. This chapter, provides the different tools and techniques that can be adopted for the greener cause and sustainability of the resources in the environment.

Across academic and practical fields the Green Computing has considerable significance. Saving energy consumption, reducing carbon emissions, cutting operating costs and ensuring a sustainable environment have become the top priority of today’s modern world. The green computing sector is a very wide variety of research activities that have been carried out in IT and educational institutions over the last few years. In educational institutions and in IT companies, electronic devices such as computers, air conditioners, and lights consume a fixed amount of electricity as well. Savingenergy helps to cut costs and help incorporate green computing.