Thu 23rd of November 2017
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A 16-year-old Indian-origin South African teen has won a $50,000 scholarship, the grand prize at the annual Google Science Fair for her work using orange peel to develop a cheaper “super-absorbent material” that helps soil retain water. Kiara Nirghin, a Grade 11 student at private school St Martin’s, submitted her project titled ‘No More Thirsty Crops’ which was aimed at tackling the severe drought plaguing South Africa.
Her solution to the problem of drought uses orange and avocado fruit peel that is normally discarded.
The Google Science Fair is a programme for budding scientists between the ages of 13 to 18, who are invited to solve the world’s biggest challenges using science and technology.
Ms. Nirghin explained how she had found an alternative in the fruit peel to super-absorbent polymers (SAPs), which absorb and carry about 300 times their weight in liquid relative to their own mass.
These SAPs are not biodegradable, are costly and full of acrylic acid, sodium hydroxide and other chemicals.
After 45 days of experimentation, Ms. Nirghin was successful in creating a low-cost super-absorbent polymer, made out of waste products from the juice manufacturing industry.
This polymer is biodegradable, can retain large amounts of water, keep soil moist and improve crop growth without regular water supplements.
The young scientist is convinced that her mixture will assist farmers in drought-hit areas.
Prelims Question of the Day
With reference to 'Natural Rate of Unemployment', consider the following statements.
1. It is the level of unemployment in an economy that is just consistent with a stable rate of Inflation.
2. It is the unemployment that prevails when all markets in the economy are in equilibrium.
(a)1 and 2
(d)None of the above
Mains Question of the Day
1.GS-No party in power can afford to ignore Directive Principles of State Policy. Comment.(200 Words)
2.Political Science - Explain the role of non state actors, like IMF, World Bank, European Union and MNCs, in modulating and transforming the broad dynamics of international relations. (250 Words).
3.SOCIOLOGY - What is the impact of Globalization on the structure and mobilization of the working class in India? (250 Words).