Check out our podcast so you can get it wherever you get your podcast you can also find us at. Science. The air we breathe d in normal times its something we can take for granted but like so many things coronavirus has changed that d. Air Conditioning Systems are suspected of a role in a series of outbreaks now businesses are going to extraordinary lengths to reassure us that their air is safe. Nowhere is that more the case than in the skies with passengers packed together taking in refill today or. What will it take for us to breathe easily again. This is your government in special here on the w n roll and welcome with summer on the horizon many of us will be tempted to switch on the air conditioning to called out but recent insides of a harvard Infectious Disease experts suggest that air conditioning use across the Southern United States may be a factor in spiking colvin 19 cases plus a coronaVirus Outbreak in germany plant was also linked to cool exists so how safe is the air we are breathing. A common sight for these coronavirus times people pouring off public transports wearing face masks looking for that 1st of fresh air. Masks in many places a compulsory but as the weather gets warmer is that enough to ease worries. I feel if i have a mask on my children and i try to make sure that im like one and half want to meters away from somebody who also has meant i feel quite sure cant be to say what. They want to get around this is they have to do. Most modern trams and buses a 58 with air conditioning units which drool fresh air from the outside. But go underground and its a slightly different story passenger numbers is still down compared to before the pandemic carriages a starting to fill up again. On my transit buses my strength around the streets around the world as i have this meeting in society in confined spaces without much transformation these are considered high risk. Despite the lack of air conditioning transport officials point to other sources of. Use a lot of outside air to ventilate the vehicles the whole. Driving force at the stations the doors open up. The stations of self of insulated by the trains going back and forth because they have these new trains pushing with their speeds moving in the air. A corona Virus Outbreak has to meet plants in northern germany has put conditioning under the spotlight again. It follows a chinese study that suggested add conditioning help spread the virus to dine a cynic language show restaurants the air condition has a movement of the air big can transfer. Theres droplets of the viruses from one to the other therefore you need much more air pressure from the outside in such cases. Scientists admit its too early to make any firm conclusions about conditioning units as well as fresh as they say high efficiency filters can help reduce the presence of the virus such filters aboard airlines use inside their cabins recycling the afro every 3 or 4 minutes but this only kicks in during the flight and not before and after. Conditions has to be acted before the passion passengers and the plane we think dead air dry air promotes so formation or arizona and consequently the possibility of an infection. Past summer and the Holiday Season approaches this year theres more than simply just a destination to consider. Well for more lets bring in young chan hes a Mechanical Engineering professor at Purdue University in the u. S. State of indiana and the editor in chief of the academic journal building and environment welcome to w. Young the Scientific Community seems to be undecided when it comes to air Conditioning Systems and the corona virus do you think they are safe to use during a pandemic. Thank you very much a christian would be media. Air conditioning system in general i think is what is sleep however he did see buzan living in the air conditioning system and the building incident here prince and saw could have proposed to sit and talk about the risks ok can you tell us how and why yes example when you called when you called if you generate a lot of the top left and also top level goal within the inside. Of the space. To get it will wonder about the 3 to 4 minutes in the airplane and 10 to 12 minutes in buildings and zabaleta will be india and you will greet even if you stay in the senate room with a single patient and you make that get at least over the 90 ok now airlines are saying it is safe to fly because they use special fill 1st which airlines claim clean almost 100 percent of their aboard a plane is thats true yeah to let the airplane use the high efficiency particular field or have a field which you can field out a particular date with that. Logic so improvable you can field out all the. However on the information could exist inside a train so be thought. Been shut out but if your condition system doesnt mention do it in lease a 3 to 4 minutes you know what a high chance to get invited. Ok when its about the filters that are key here can they be used in other places like public transport like office buildings. Yes in prison ball is a half hour field has a can be eaves of the in any condition insistent however thats a problem because when you use to have a filter then you need a powerful fang in order to push it in. Now most of the build ins Public Transportation systems like the train passes are subtle ways they are not that you could do with a lisa powerful fan so when you used to have a field that meant that you will have a much less air so thats also a dilemma to use as i have. All their own tended to have what a powerful fence did ok are these fans being worked on to integrate them into regular air Conditioning Systems. In the air conditioning system we do have a normal fans but a lot of fans up to get a on it work at target with a little low efficiency filters and the law efficiency field is typically installed in the building nominee good because even less and can then make you have no problem with that but to do it in the pandemic of causing you to have what is small that is could be in a condition insistent and you may not be able to stop that. And in general when it comes to air conditioning what can companies do to lower the risk of infection for their employees working in offices. Lets great question chris the 1st thing you definite want to do you good to see you can install this in c. Have filters there and i doubt because it might not be possible then a 2nd away if you happen to run a conditioning system i will recommend that you use a 100 percent. Because outside it is unlikely to contain and he called me the 19 by this so you surprised just how sad it will be when you say so i dont know you but you could open a windows will be great because the natural frontal ation is where the good to reduce and the. Dividers the inside of a space is and if you could also consider to buy a. Field. Inside a ball for clinton because a lot. Is also what efficiency in getting out all from the particular it ends up lets. Take it Mechanical Engineering professor at Purdue University yeah thank you for your insights though i think you were innocent. And now it is over to another expert in his field our science correspondent David Williams answering the questions you sent us. So how dangerous. Do we need to disinfect everything if it comes into the home. So if the virus can remain viable for up to 3 days on some surfaces how much of a threat do those surfaces pose objects that have been contaminated and later transfer of disease are known as foam mites and theres been a lot of discussion about how big a role theyre playing in the current pandemic increasingly though the consensus is that that phone might transmission is the exception rather than the norm thats because a whole sequence of events has to happen for it to occur starting with the smearing of significant amounts of the virus on a surface by by someone whos infected when the clock starts ticking as it begins to lose by ability frequently touch surfaces like door knobs or Elevator Buttons pose more of a threat than say a carton of milk from the store but even if you pick the virus up on your hands you still have to actively transport it to your face within a certain time frame and not wash your hands in the interim in comparison you just have to be close enough to someone shedding the virus as an aerosol and to breathe in and to catch the disease that way so most experts and Health Authorities say now that although full my transmission is possible a covert 900 much more easily person to person. And finally the coronavirus pandemic lockdowns may have stopped us from doing the things we enjoy most now taipei in. National airport came up with an idea to help those who missed being in the air they are from a flight to nowhere organizers say 10000 people took part in the draw and 30 lucky winners were chosen they could take a friend and were given the chance to check in walk past few days free shops and board a plane which remained on the ground even included a water spraying center. At least nobody lost any luggage there thats a show thanks for watching c. Of s. Of are. Huge numbers of corona virus infections in Meat Processing plants. Cruise treatment of livestock transported across europe. Terrible living on what conditions for employees. How toxic is the Meat Industry. Global 3000. Next on d w. Is quite as simple as it seems. To understand the world better we need to take a closer. Experience knowledge tomorrow just. 16. Told you. This is so no story a stubborn rice farmer from thailand. Has problems past. His credo no chemicals. Is why. So it was a crazy. Step. I. Dont stand a chance. Training successful. Duck academy. Starts july 27th i. Welcome to global 3000 drought is on the rise in tunisia and water is becoming an ever more Precious Resource how a farm as that. We look at the Meat Industry and find out what conditions