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A Boeing 747 belonging to British Virgin Atlantic Airways conducted a flight test powered by biofuel on the 24th. This was the world’s first flight of a commercial passenger aircraft powered by biofuels. The event organizers said that the purpose of their action was to show the world that biofuels can reduce the greenhouse gases emitted during aircraft flights. One day, airlines will be able to use biofuels in their daily operations to reduce the harm caused to the environment. The test flight was unmanned. The passenger plane took off from London’s Heathrow Airport at noon on the 24th and arrived in Amsterdam, a port city in the Netherlands, after about an hour and a half. To carry out this special mission, the organizers specifically assigned Jeff Andreasen, a pilot of Boeing aircraft for an airline, to handle the flight. There were no passengers on the plane. The airline did not disclose the specific biofuel used in this test flight, but stated that it is a \"truly sustainable\" biofuel that will have no negative impact on food production or limited water resources. Richard Branson, the billionaire owner of Virgin Group, told British Sky TV that this test flight will provide researchers with valuable data and experience to help reduce greenhouse gas emissions more effectively. Paul Charles, the airline’s head of media affairs, believes that the use of biofuels results in a significant reduction in greenhouse gas emissions compared to traditional aviation fuels. Operational use is expected in five years. Charles said that as tests proceed and technology matures, biofuel-powered aircraft could be used for commercial flights in the future; “it’s very likely that in 5 years, an aircraft will be able to fly using some type of biofuel.” A report published by the European Commission about a year ago stated that the greenhouse gases generated by the aviation industry account for 3% of the total greenhouse gas emissions in the EU, an increase of 87% compared to the level in 1990. To reduce greenhouse gas emissions, the aviation industry is seeking ways to make flights more \"green,\" including finding alternative fuels, developing more energy-efficient aircraft engines, changing the way planes land, and promoting recyclable systems on board. It is reported that earlier this month, an Airbus A380 belonging to European Airbus also conducted a test flight using alternative fuel. During the flight from the UK to France, the aircraft was powered by a mixed fuel consisting of a liquid fuel derived from natural gas and conventional aviation fuel. This also marked the world’s first test flight of a commercial airliner powered by alternative energy. Reactions from the public have been mixed; although airlines are praised for their efforts to reduce greenhouse gas emissions through biofuels, this trial flight has still raised doubts among some people. “It is good that people like Richard Branson are willing to invest heavily in experiments aimed at reducing the aviation industry’s impact on the climate. ”Aviation industry analyst James Holsted said, “But there are still many issues to be resolved regarding the usefulness of biofuels in combating global warming.” ” Less environmentally friendly? The Associated Press says that there is a current boom in the development of biofuels, such as ethanol extracted from food crops like corn to replace gasoline. However, several scientific reports published recently have questioned the role of biofuels. These reports state that if all the costs associated with producing biofuels are taken into account, the greenhouse gases generated by these so-called \"green\" energies could be even higher than those produced by traditional energy sources. The Sunday Telegraph reported that even Billy Glover, Boeing’s head of environmental affairs, admitted he did not know when the aviation industry would be able to truly curb the increase in greenhouse gas emissions, let alone reduce them. Jacobson, a professor of environmental engineering at Stanford University in the United States, believes that the data from this flight test should be evaluated by independent scientists, rather than the technicians from the airline involved in the test. He said that even if it could be proven that biofuels help reduce greenhouse gas emissions, aircraft still produce large amounts of pollutants and nitrogen oxides during flight.