The 5 Challenges

ENERGY

Oops... Slider with alias ydroviologia 11 not found. ENERGY The energy challenge demonstrates the excessive use of energy in contemporary world. Most of it is now produced by burning mineral materials, mainly oil, causing global environmental problems, such as inversion of climatic balance and acid rain. At the beginning of the 21st century, humans are called upon to replace mineral fuels with renewable alternative forms of energy. Solar energy The only inexhaustible source of energy is solar energy, which could meet the majority of...

Read more...

TRANSPORTS

TRANSPORTS Today, transport of persons and goods is made by various means: cars, airplanes, trains and ships pollute now more than ever the atmosphere, the land and the sea aggravating the greenhouse effect, with well-known environmental impacts deriving from irrational burning of mineral fuels. Fuel types Which are the fuel types used today? Which of them are the most environmentally friendly? Leaded gasoline is one of the red fuels, since lead may burden human health. On the contrary, ethanol (being one of...

Read more...

WATER

WATER Drying-out of rivers, floods, diseases caused by water that is not pure enough when reaching our home… these are some of today’s prevalent global water problems. Fresh water reserves are low – even lower in tropical countries - therefore they are extremely valuable. In developing countries women and children carry water to their houses on a daily basis. Their buckets contain approximately 20 lt. of water, which is the quantity they have to lift every time they bring water. By...

Read more...

NATURAL RESOURCES

NATURAL RESOURCES Shrinking of the ozone layer, the greenhouse effect, chemical waste produced by industries, destruction of ecosystems and threat of extinction, and wildlife trade: these are all consequences of human activities. Modern lifestyle represents the culmination of constant exploitation of natural resources by man that has been going on for thousands of years. Therefore, a new approach is needed, a containment of environmental degrading. It is now necessary to have an environmentally friendly development as well as a balance of...

Read more...

FOOD

FOOD Soil corrosion, chemical substances used in agriculture, loss of genetic diversity, monocultures, overfishing, the chronic malnutrition of 800 million people: these are all food problems of today. Soil counts Soil marks the starting point of nutrition. Healthy soil produces healthy food. Soil must be seen as a non-renewable natural resource, since it may require up to 10,000 years for the formation of 10 cm of fertile soil. Cultivation – means of control Our food comes from cultivation of plants and animal breeding. For...

Read more...