Two stories this week drew attention to the role of information and the efficient operation of markets.
Tesco is to test putting "carbon labels" on its own-brand products next month in a move to enable consumers to choose products which are less damaging to the environment.The retailer will put carbon-count labels on varieties of orange juice, potatoes, energy-efficient light bulbs and washing detergent, stating the quantity in grammes of CO2 equivalent put into the atmosphere by their manufacture and distribution.
Vitamin supplements taken by millions of people do not increase life expectancy and may raise the risk of a premature death , according to a review of 67 studies with more than 230,000 subjects. lage numbers of people take such supplemets in the belief that they are beneficial for their health.
http://www.guardian.co.uk/society/2008/apr/17/health.healthandwellbeing
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