Sustainability

Operambienta

April 22th Earth’s day

EARTH’S DAY

BY RAMIRO VELAZQUES GOMEZ – PUBLISHED ON APRIL 22ND 2017

Nowadays Earth is facing intense stress, which is caused by human activities. It is affecting the survival of many species, including humans. IUCN   (International Union for Conservation of Nature) has 16,300 species in their endangered list. According to NASA, the carbon dioxide concentration in the atmosphere, a strong greenhouse gas that contributes to the global warming and the climate   change, is in 405.5 particles per million (ppm), which is the highest concentration in the last 650,000 years.

The temperature has increased almost 1 °C since the pre-industrial era and the Arctic ice decreases 13% per decade, at the same time Greenland and the Antarctic lose 287 gigatons of ice. The sea level raises 3.4 millimeters per year. The human population today is 7,500 million people and all together requires a large amount of resources, which 54% live in urbanized areas. 780,000 million people go to bed hungry every day and 4,000 million live with limited access of water for a normal life.

In accordance to WWF, 32% of fisheries are overused and 53% are exploited at maximum capacity. The fishing fleet is 2 – 3 times higher than the sustainable resource exploitation endured. Since 1990, according to FAO, 129 million of hectares have been deforested, an area of land equivalent to South Africa.

In Colombia

The country deforests 125,000 acres per year.  The Colombian Amazon forest has lost 10%, which is the lung of the continent that regulates the weather.

Ideam (The National Institute of Environmental Studies, Meteorology and Hydrology)   informed this week that 40% of the national territory suffers some degree of soil erosion.

At Aburrá Valley, the degradation of the air breathed by the population is facing acceleration this century and is lacking 700,000 trees.

In a water-rich country that has six times more water than the world average, 43% is wasted and there is a water shortage during summer in 300 municipalities.

The weather change is also affecting the glaciers: There are just 37 square kilometers left in the glacier covered area, a 63% of it has been lost the last 50 years.