Since 1996, 52,202 water samples from hand tubewells were analyzed for arsenic (As) by flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS) from all 64 districts of Bangladesh; 27.2% and 42.1% of the tubewells had As above 50 and 10 μg/l, respectively; 7.5% contained As above 300 μg/l, the concentration predicting overt arsenical skin lesions. The groundwater of 50 districts contained As above the Bangladesh standard for As in drinking water (50 μg/l), and 59 districts had As above the WHO guideline value (10 μg/l). Water analyses from the four principal geomorphological regions of Bangladesh showed that hand tubewells of the Tableland and Hill tract regions are primarily free from As contamination, while the Flood plain and Deltaic region, including the Coastal region, are highly As-contaminated. Arsenic concentration was usually observed to decrease with increasing tubewell depth; however, 16% of tubewells deeper than 100 m, which is often considered to be a safe depth, contained As above 50 μg/l. In tubewells deeper than 350 m, As >50 μg/l has not been found. The estimated number of tubewells in 50 As-affected districts was 4.3 million. Based on the analysis of 52,202 hand tubewell water samples during the last 14 years, we estimate that around 36 million and 22 million people could be drinking As-contaminated water above 10 and 50 μg/l, respectively. However for roughly the last 5 years due to mitigation efforts by the government, non-governmental organizations and international aid agencies, many individuals living in these contaminated areas have been drinking As-safe water. From 50 contaminated districts with tubewell As concentrations >50 μg/l, 52% of sampled hand tubewells contained As <10 μg/l, and these tubewells could be utilized immediately as a source of safe water in these affected regions provided regular monitoring for temporal variation in As concentration. Even in the As-affected Flood plain, sampled tubewells from 22 thanas in 4 districts were almost entirely As-safe. In Bangladesh and West Bengal, India the crisis is not having too little water to satisfy our needs, it is the challenge of managing available water resources. The development of community-specific safe water sources coupled with local participation and education are required to slow the current effects of widespread As poisoning and to prevent this disaster from continuing to plague individuals in the future.

Media and advertising play vital role in creating product demand and market share. It also impacts the social welfare of the society. Media connects the consumers by highlighting the versatile characteristics of the products that consumers may not know them before. Media and advertising create an urge for the products and consumers are virtually on the search for such products until they can actually consume and test them. Advertising the products and services through media and information technology is as revolutionary as industrial revolution in the past. Now in new millennium, even a tiny firm or a small country can use such techniques of advertising through dynamic media and information technology and can advertise across the globe in a matter of seconds. Firms or countries which were unknown before and had hardly any imprint or impact on global market place, now creating enormous demand for their products and services through media and information technology. The impact of technological revolution in media and advertising contributed a great success in boosting the demand for both traditional and non-traditional goods and services, including travel and tourism, education, medical treatments, entertainment and a host of other goods and services. Everything is happening so fast that many firms and countries are facing constraints to match the supply with unprecedented demand response. In the world of