Prince Harry is facing renewed controversy over his trip to Google’s "green" summit in Sicily amid claims that he stayed on a superyacht.
Several sources have said that the Prince was a guest on one of the giant vessels moored near the exclusive Verdura Golf and Spa Resort where the climate change retreat was held.
One insider said: "He was staying on the yacht with some of the other VIPs. He would sleep on there, come in in the morning and be around the resort during the day."
According to experts, a 390ft super-yacht produces about 3.3 tons of damaging carbon dioxide each hour at sea by burning through around 757 liters of fuel.