 "A labourer stands on a truck carrying construction materials at a construction site of residential buildings <b> Reuters <b>")
The first Earth Day was celebrated on March 22, 1970, almost a year after man first landed on the moon. In the decades that followed, earth’s other close neighbour, Mars, has been visited many times by unmanned spacecraft. NASA aims to send humans to Mars in the 2030s and its fitness for hosting human colonies is being assessed. This is an exciting scientific quest but somewhere in this endeavour lies the recognition that we may be pushing the earth to a point where an additional home may be required.
The Intergovernmental Panel on Climate Change, which tracks and predicts the effects
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