A

Possible answers<ol><li>﻿﻿Disease can easily spread in unclean water.</li><li>﻿﻿Natural disasters such as a tsunami or hurricane</li><li>destroy clean sources of water. People often lose their homes and have to travel to camps where it's difficult to deliver clean water to thousands of people at once.</li><li>﻿﻿Bottled water is often delivered by truck or helicopter.</li></ol>Sometimes large vehicles carrying water tanks deliver water.

Background informationSolar lanternsThe photograph was taken by National Geographic photographer Annie Griffiths who focuses on images of women and women's issues. The lanterns in the photo were given to the women by the Self Employed Women's Association in India. The women learn how to build the lanterns in areas where no electricity exists.

Answers1f 2d 3a 4e 5b 6c

Answers﻿3 ﻿I'm going to give you a bit of a demonstration.﻿4 ﻿Let's look at the applications.﻿5 ﻿So, here is the 'thinking different' bit.

Answers<ol><li>﻿﻿Good morning everybody. I'd like to talk about a couple of things today. The first thing is water.</li><li>﻿﻿However, after a few failed prototypes, I finally came up with this, the Lifesaver bottle. ... OK, now for the science bit. Before Lifesaver, the best hand filters were only capable of filtering down to about 200 nanometres.</li></ol>

Answer1 diarrhoea 2 the problem is too big 3 death 4 five5 viruses and bacteria

AnswerSentence 3 is the main message.

Answers1 a 2 b 3 c 4 b 5 a

Answers1 6,000 2 a camp 3 expensive 4 natural processes5 25,000 6 two

AnswersMakes the demonstration interactive: He asks the cameraman to smell the water and Chris to drink the water after the demonstration.Makes the demonstration big enough to see: His tank is very large and he uses large containers of dirty water so everyone can see.Make movements large and expressive: When he pours water and waste in and uses the 'Lifesaver", he makes his gestures very large.

Answers1 d2 b3 a4 c

Answers1 demonstration 2 pond 3 leaves 4 poo 5 water6 audience 7 pump 8 filter

1 e 2 c 3 a 4 b 5 d

<ol><li>It took eighteen months of trial and error.</li><li>Over a hundred.</li><li>﻿﻿The 18.5-litre jerry can.</li><li>He earned it for services to innovation in recognition of his attempts to end global water poverty.</li></ol>

1 affordable 2 Premature 3 public4 lifesaving

c Saving lives simply, quickly and cheaply

1 F - The podcaster feels that she should do / would be good at it.2 T3 T4 F - In India they had to use different waste as fuel.

<ol><li>﻿﻿Because the speaker was engaging, inspiring and passionate about making the world a better place (by dealing with indoor cooking-fire fumes).</li><li>﻿﻿Because he didn't realize that so many people die every year from cooking-fire fumes and he takes / we take for granted how easy it is for us to cook a meal for our families and ourselves.</li><li>﻿﻿That it's important not to stop farmers from becoming farmers, but to help them be successful farmers.</li><li>﻿﻿By giving people tools to make changes to improve their daily lives, their health and their economic situation.</li><li>﻿﻿The fact that there are dedicated, innovative individuals working towards a better world.</li></ol>

1 I'd like to start by telling you about what particularly impressed me about this talk and why.2 ﻿﻿The first thing is Amy Smith is an engaging speaker, inspiring and passionate about using her resources, the resources available in a developed country, to make the world a better place.3 ﻿﻿Now that I've explained a little bit about her, I'll move on to describe what she said that was new for me: over two million people worldwide die annually from indoor cooking-fire fumes. Isn't that heart-breaking? 4 l'd like to tell you what the solutions are a little later.5 OK, now for the work she tells us about in her talk: it really felt like people making a difference, a worthwhile investment.

1 b 2 a 3 b 4 a 5 c