Peculiar pretzels
Walking in Halswell Quarry Park in Christchurch, New Zealand, we found these geometric objects by the path (pictured). They look human-made, but are apparently natural. Can anyone identify them?
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Watery Trails
Ferries and other craft crossing Sydney Harbour naturally leave a distinct wake, signified by trails of a lighter colour than the surrounding water. These sometimes persist for more than 30 minutes after the craft has passed through, and the surface takes on an appearance reminiscent of ski trails through virgin snow. How can this be so on a body of water that is in constant, albeit gentle, motion?
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Stop the rot
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In black and white
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One for the Eggheads
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Woolly Ideas
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