ISO 20121 (full name: ISO 20121:2012, "Event sustainability management systems –- Requirements with guidance for use") is a voluntary international standard for sustainable event management, created by the International Organization for Standardization. The standard aims to help organizations improve sustainability throughout the entire event management cycle. 

Every event – from a village barbecue to a major sporting event like the Olympics – will have economic, social and environmental impacts. Water and energy resources are put under pressure, significant amounts of waste and carbon emissions can be generated. Sometimes events can put a strain on local communities. By 2005, practitioners within the events industry were becoming aware of the need for more sustainable practices. 

Specifically, the Head of Sustainability at the London 2012 Olympic and Paralympic Games, David Stubbs, was looking for a way to make good on the sustainability promises made in the London Games bid. 

He raised the issue with the British Standards Institution (BSI) in the UK. This led to the creation of BS 8901:2007 "Specification for a sustainable event management system with guidance for use". After a period of review, the second version of BS 8901 was published in 2009. 

BS 8901 was received very positively by the international event industry, and was soon being widely used. For example, COP15, the United Nations Conference on Climate Change, was certified as compliant with BS 8901 in December 2009. The Microsoft Corporation achieved certification to BS 8901 at its Microsoft Convergence® 2009 event in New Orleans, Louisiana, in March 2009. QUESTIONS:

Q1:
1. What is the main subject of the article?
2. What does the article focus on?
3. What topic does the article mostly cover?
Q2:
1. What's one event that has impacts?
2. What is an example of an event that impacts the world?
3. Name one sort of gathering that comes with certain impacts.
Q3:
1. What's one event that has impacts, besides a village barbecue?
2. What is an example of an event that impacts the world, in addition to a village barbecue?
3. Name one sort of gathering that comes with certain impacts, as does a village barbecue.
Q4:
1. What's one event that has impacts, besides a village barbecue and the Olympics?
2. What is an example of an event that impacts the world, in addition to a village barbecue or the Olympics?
3. Name one sort of gathering that comes with certain impacts, as does a village barbecue or the Olympics.
Q5:
1. What is the number of impacts listed?
2. How many different ways is impact made?
3. How many kinds of impacts does the article mention?
Q6:
1. What is one of the impacts the article mentions?
2. Name one of the impacts listed in the article.
3. What's one example of an impact that events have?
Q7:
1. Do impacts on the environment exist?
2. Is it possible for the environment to be impacted?
3. Are there potential effects on the environment?
Q8:
1. What other impact is there, besides environmental and economical?
2. What other impact hasn't been mentioned, in addition to environmental and economic?
3. What's an impact that hasn't been discussed, as have environmental and economic ones?
Q9:
1. What's an example of a resource that can be strained?
2. What's a resource that can have strain put upon it?
3. What is one resource that sometimes feels pressure upon it?
Q10:
1. What's an example of a resource other than water that can be strained?
2. What's a resource that can have strain put upon it, besides water?
3. What is one resource that sometimes feels pressure upon it, like water?
Q11:
1. What emission can pressure on water and energy generate?
2. What is emitted as a result of pressure on water and energy?
3. What does pressure put upon water and energy result in?
Q12:
1. What emission besides waste can pressure on water and energy generate?
2. What is emitted as a result of pressure on water and energy, other than waste?
3. What does pressure put upon water and energy result in, besides waste?
