can science improve our qualtity of life ?

I hope this outline can help you write about how human life is affected by science:

1. science has improved communications (e.g. mobile phones, msn)
so people can talk to others quickly even if they are very far away

2. medical science has improved human health
so people nowadays live longer

3. also improved production efficiency and cost

However, science alone cannot give us a good future:

1. people may use latest technology to commit crimes more easily,

2. may also invent more powerful weapons to kill more people,

3. can make some people lose their jobs,

4. can even kill the earth (e.g. global warming is caused by us)

Therefore, science is a "tool" only, but we must use it very carefully.

You may go to the library and search on books and magazines about recycling.