In 2010 Ms Reinhart and Mr Rogoff initiated an influential line of research with a paper that purported to show that growth slowed dramatically when public borrowing rose above 90% of GDP.
The group released a video that purported to show Moaz al-Kasasbeh being held in a metal cage surrounded by oil then the fuel is lit and the pilot is pictured burned alive.
Athletes take them to increase the size and strength of their muscles, and for their purported ability to enhance recovery after exercise, which allows people to train harder than would otherwise be possible.