this is the Technology Report.An international coalition is calling for a banon fully autonomous weapons known as "killer robots."The 45-member coalition proposed the banto governments last monthat a meeting of the United Nations Conventionon Conventional Weapons in Geneva, Switzerland.The Campaign to Stop Killer Robotswants the U.N. organization to add fully autonomous weaponsto its work program in 2014.Scientists have yet to develop fully autonomous killer robots.However, technology is moving toward increasing autonomy.Such weapons would identifyand attack targets without human assistance.Noel Sharkey is a founding memberof the Campaign to Stop Killer Robots.He also chairs the International Committee for Robot Arms Control.Mr Sharkey says autonomous weapons should be banned."The big problem for me is that there are no robot systemsthat can discriminate between civilian targets and military targetsunless they are very, very clearly marked in some way…so, the idea of having robots going out into the fieldand selecting their own targets is to me,is just horrifying. It cannot work, " said Sharkey.Activists say robotic systems with different degrees of autonomyare already in use by Britain, Israel,the United States and South Korea.They believe China and Russia are also moving toward these systems.Steve Goose is a member of the campaign,he also directs the Arms Division at Human Rights Watch.He warns the killer robots will become a realityunless governments act now to ban them.He says the world should oppose the weapons systemthat would be able to identify and attack targets mechanically.He believes such a system crosses a basic moral and ethical line."Robotic weapons systems should not make lifeand death decisions on the battlefield.That is simply inherently wrong.So, they need to be banned on ethical grounds.We think they also need to be banned on legal grounds.If and when a killer robot commits a war crime,violates international humanitarian law…who would be held accountable,who would be responsible for that violation?" said Goose.He adds that in recent months, fully autonomous weaponshave gone from a little known issue to onethat is commanding worldwide attention.He says that since last May,34 countries have openly expressed concernabout the dangers the weapons present.Mr Goose notes that in 1995,the Convention on Conventional Weaponsadded a new policy to the treaty,which barred the use of blinding lasers.He believes killer robots could become the second such weaponto be banned before it is ever used in battle.And that is the Technology Report from VOA Learning English.For more about our reports,visit our website at 51voa.com.I'm June Simms.更多听力请访问51voa.com