2013 UN DESD Student Summer Institute Ching Chung Hau Po Woon Secondary School

Do you know what problem I’m facing?

increasing in every years The global annual temperature is increasing in every years. keeps rising It keeps rising in the future.

carbon dioxide concentration Temperature rise is related to the carbon dioxide concentration! Where do they come from?

Industrial Revolution The Industrial Revolution is one of the main causes of climate change

Fossil fuel Combustion Industrial processes Deforestation Transportation and even buildings

Greenhouse Gases Water Vapour Carbon dioxide (CO 2 ) Methane Nitrous oxide Chlorofluorocarbons (CFCs)

sunlight heating up the Earth some of the heat from the Sun escapes into space carbon dioxide in the atmosphere traps some of the heat from the Sun Enhanced greenhouse effect

Sea level is rising Arctic sea ice is melting Arctic sea ice is melting Seawater is becoming more acidic. Ecosystems are changing Warmer temperatures affect human health

Polar Bears TurtlesTurtles WhalesWhales

PenguinsPenguins SealsSeals LobstersLobsters

In our daily life, we use a lot of energy. What are the energy sources?

They are made from dead bodies of organisms from million years ago. LIMITED They are LIMITED! POLLUTIONS They produce energy, also POLLUTIONS!

sulphur dioxide carbon dioxide Pollutants like sulphur dioxide and carbon dioxide are released in the burning of fuels. killing living things killing living things in lakes and rivers

two Sustainable Energy has two key components: Renewable Energy Energy Efficiency

when you need it - Switch lighting on only when you need it. daylight - Use daylight whenever possible. - Place your lighting carefully where you need it. - Use dimmers where possible (except for fluorescent lamps and compact fluorescent bulbs). non-opaque, light-coloured lamp shades - Use non-opaque, light-coloured lamp shades.

its Energy Efficiency Ratio - When buying an air-conditioner, check its Energy Efficiency Ratio, with lower numbers denoting better efficiency. unoccupied rooms - Close off areas that do not require air-conditioning, and turn air- conditioners off in unoccupied rooms. energy-efficient level - Set the temperature to an energy-efficient level so that you will feel comfortable rather than cold. Use fans - Use fans instead of air-conditioning whenever possible.

public transport Use public transport (bus) in stead of cars bicycle Ride bicycle to replace cars feet Walk by feet if your destination is not far