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While invasive species pose major public health implications and can certainly affect humans' quality of life, their adaptive abilities can rival those of human migrants and pose a puzzling question: Who's the real invader here?

The bust disappeared just seven years later, puzzling Parisian authorities and fans alike.

Into this puzzling mix fell two other decisions this week.

But the most puzzling of all her recent attempts at relevance has got to be her continued loyalty to the producer and songwriter known as Dr. Luke.

Some beer bottles and medicinal glass jars have been brought to the surface - but their existence in just one spot is "puzzling", said mum-of-two Zoe Brown.