1. POSITIVE AND NEGATIVE EFFECTS OF ENGINEERING

2. Cans Positive Low cost for the manufacturing process Recyclable Negative Aluminum might cause cancer and other disease

3. Smartphone Positive Communication Being able to use software Taking pictures Negative Recycling of the components Electricity consumption

4. Solar panel positive No emission of greenhouse gas Negative Recyclability

5. Skyscrapper Positive Gain of space Negative Using a huge amount of sand

6. Nuclear plant Positive No emission of Co2 Reduce the price of electricity Save fossils resources Negative Radioactive waste Risk of being damage

7. Hydroelectric dam positive No emission of greenhouse gas Lifetime No dangerous material produced Negative Relocation of people Destabilize the ecosystem

8. Internet Positive Knowledge sharing Information resources Faster communication Social networking Online services and E- commerce Negative Personal information can be stolen Social isolation and dependency

9. Lights Positive Technology has improved in the last couple of years Negative Presence of mercury, nickel and other heavy metals

10. THANK YOU FOR YOUR ATTENTION