A sea kayaker navigates the rocks around Flowerpot Island in Ontario's Fathom Five National Marine Park.

在安大略省的五英寻国家海洋公园里，一名海上皮划艇运动员在花盆岛周围的岩石间穿行。

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This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.

然而，查特基博士的说法引发了疑问：为什么全球白垩纪晚期岩石中含有冲击石英和铱的喷发物地层只有一层？ 答案或许是，两次撞击是在同时发生的。

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While there were plenty of rocks around they were all pretty ordinary, and since I already had a large collection of ‘ordinary’ images I was after something special.

因为那里有大量的石头，而且都相当平凡，既然我已经有了一大票“平凡”的照片，我希望找点特别的。

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The rocks were tumbling down around us. We dropped our tools and ran."

VOA: standard.2010.04.02

This story, though, raises the question of why there is but a single ejecta layer of iridium and shocked quartz in late Cretaceous rocks around the world.

ECONOMIST: Mass extinctions

Mr Rushden said engineers had found that the rocks around the hole left on the rock face were weathered and the area was being assessed and stabilised on Thursday.

BBC: Rock fall closes Jiggers Bank in Shropshire

There are dozens of piles of rocks dotted around Saklat, marking the spots where families plan to rebuild their homes once their payments come through.

BBC: Some say the compensation payments do not go far enough