Dr T.V. Venkateshwaran and Jyoti Singh

For a long time now, historians have been using epigraphy to infer the political and economic aspects of the past. In recent times, astronomers have come to realise that it can also be a potent tool to understand the history of astronomy as well as for inferring minute changes in the motion of Earth. 

The per capita availability of water in India is going down progressively and the situation may become precarious unless the country takes measures like the recycling of water in an organised manner, warns Dr Sharad Jain, director gener