At the inaugural Penang International Science FairCarbon dioxide rockets shot up from makeshift launching pads, and their plastic bottle cargo parachuted down briskly to the ground. Every zipping projectile that stabbed the dense late morning air was followed by a children’s choir of “oohs” and “aahs”. Nearby, a long queue watched the sun and sky through large side-view telescopes. One rocket caught a breeze, and its bat-like chute of black plastic and string quickly floated sideways across the front façade...
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