Sun gives out tremendous amount of energy in the form of radiation by combining Hydrogen atoms to form Helium. Earth receives a small fraction of this energy which is harnessed by solar photovoltaic cells to generate electricity. By one estimate the average solar energy that falls on earth for one hour can meet the needs of all the energy consumed by humans in one year. By far solar energy is the largest resource compared to all the others that is distributed more or less all over the globe and has the potential to empower and impact large segments of world population and meet the growing needs of energy.
BioFuels and Biomass
The tremendous industrial progress over the last hundred years was driven by large industrial enterprises and various modes of transportation infrastructure where fossil fuels have played a significant role. As there is a realization of the finite nature of these resources and the realization of nasty side effects, there is search on for the next generation of alternate and renewable fuels. Several fuel options are being investigated that could be based on cellulosic or algae. The next generation of biofuels needs abundance of high quality feedstock to harvest enough oil to progressively substitute fossil fuels.
Algae: The world's Most Important Plants
The need of the hour is to improve and increase knowledge and practices to make sustainable activity a priority in all human activity with nature. Intelligent sustainable activity will provide the triple bottom line benefits to the environment, economy and society. If all activities are performed with sustainability as foundation and being cognizant of the life cycle cost of all endeavors the triple bottom line is a natural outcome for a sustainable environment with clean air, water, and energy for a healthy living in harmony. It could be in the form a more efficient LED light bulb, adoption of rain water harvesting techniques, charge aquifers, LEED (Leadership in Energy and Environmental Design) based building construction or redevelopment, or disposal of batteries, bulbs, or e-waste.