Yoyo — a toy and much more

IT looks simple and ordinary and playing it may seem very childish. But with a history dating back at least 2,500 years — and still spiralling up and down a string like an ever spinning reel more than two millennia... more »

Dam if we do, dam if we don’t

AS civilisations developed, the need for quality water increased in tandem. To meet this need over time, reservoir or dam development began taking on a progressively important role as a supply infrastructure, freeing up raw water to end-users with a... more »
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