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It is estimated that useful life of world’s well known petroleum reserves will last 40 years, natural gas will last 61 years and coal reserves will be exhausted in 227 years. Decrease in fossile fuel reserves due to fast consuming and environmental damages due to increasing environmental pollution makes it necessary to orient towards new and renewable energy resources. Natural thorium comprising blend of completely radioactive isotopes was first discovered by Berzelius in 1828 and its radioactivity was revealed by...

There are many varieties of plant in the world. Plants are essential to the balance of nature and people’s lives. As a critical part of the ecosystem, plants provide oxygen for organisms to survive. They are able to reduce the problem of pollution, by using carbon-dioxide. Plants are also the basis of most food webs as producers of food for herbivores and ultimately carnivores. Plants also provide shelter for animals, clean and filter water and help prevent soil erosion. Historically, plants have provided a source...