PULAU UBIN, Singapore — It takes no more than 15 minutes to make the eastward crossing on a juddery old bumboat from Changi Jetty on Singapore’s main island to Pulau Ubin, where gray-barked pulai trees stretch skyward, their pillar-straight trunks evoking the slate and glossy office towers that crowd the Singapore skyline. The 1,020-hectare boomerang-shaped Pulau Ubin is “the last kampong,” or village, and “a living showcase of what Singapore was like in the 1960s,” according to Visit Singapore, part of the country’s official tourist board. Not surprisingly for a place advertised as such, the short boat trip across the narrow strait aims to take visitors back a half century. Pulau Ubin, or Granite Island, is a preservationist’s pearl — a verdant throwback to the pre-industrial, pre-urban way of life still to be found here and there in rural Malaysia and Indonesia. Those old ways are otherwise history in Singapore, where 5.6 million people are jammed onto a mere 720 sq. km. of land area.
JAKARTA — As Asia’s economies grow and its cities modernize, the region’s voracious appetite for construction materials has driven demand for sand — alongside illegal trade of the commodity — to unprecedented levels. With rapid urbanization and infrastructure expansion, some countries are mining surrounding seas and their river and lake beds at a pace that could have grave implications for the environment. Along with gravel, cement and water, sand is needed to make up the trillions of tons of concrete used so far in laying Asia’s new roads and constructing tens of thousands of urban buildings. Around a third of the world’s land area is classed as desert, but, rounded and smoothed by the heat and wind, desert sand grains are useless for construction. Sand also makes for a bulky, heavy cargo and the high transportation costs mean that sand is usually dug up or dredged relatively close to where it ends up being used. “International trade is limited, unless the two countries in question are close neighbors,” said Zoe Biller, an industry analyst