"For our part, we have detected no significant drop because of that type of situation, " he said.

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The new Explore Box looks like a Google search box, with the auto-suggest drop down of suggestions as you type a search term.

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As you start to type, suggestions appear in a drop down.

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This means the robot can distinguish the type of waste based on its colour and drop it into the appropriate bin.

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But for students who drop out of college without finishing a degree, student debt is the worst type of debt possible: a long-term financial burden with no utility that is practically impossible to shed in bankruptcy.

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Experts believe that, as Floel's study suggests, increased inflammation and a drop in insulin sensitivity (which is known as insulin resistance) may help explain why obesity and type 2 diabetes have been linked to worse mental performance and a greater risk of Alzheimer's disease.

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