Global warming increases the risk of flooding

Scientists have long warned that the global temperature increase leads to changes in precipitation patterns. The basis of the argument is simple: more power means more heat in the atmosphere and it is therefore more water vapor and more activity in the system.
Experts say it is difficult to predict exactly how rainfall will change in every corner of the world, but they know that, because of the greater amount of energy in the atmosphere will become more common extreme events such as storms, hurricanes and strong temporary and the Climate change and the global warming.

Indeed, two articles recently published in the journal Nature corroborate these predictions. The authors argue that human emissions of greenhouse gases have substantially increased the likelihood of heavy rainfall and flood risk.

Climate change and the global warming

Francis Zwiers and colleagues at the Division of Climate Research Division of Toronto (Canada), have managed actual rainfall data recorded over half a century in the Northern Hemisphere to conclude that torrential downpours have more than doubled.

The researchers used the records of rainfall made by 6,000 different meteorological stations between 1951 and 1999 across the northern hemisphere. The ground covered includes North America and much of Eurasia to India. Data came from maximum rainfall in a single day each year and also recorded the maximum rainfall for a period of five days each year that are, according to them, that best reflect what is a torrential downpour Climate change and the global warming.

Global Warming

After implementing new computer systems for calculating all these databases, the researchers found that violent rainfall events have increased by two-thirds of the northern hemisphere in recent decades. In particular, records of daily maximum has increased by 65% of the stations and the maximum of five days in 61% of them.

Brazil introduced its new green jersey

The renewed coat with a green band unpublished breast height, was manufactured by recycling plastic drink bottles. Will be used for the first time on 9 February to France.According to marketing director of Nike, Thiago Pinto, the band-green in the yellow jersey holder, yellow and blue shirt in the alternative, was conceived as a "shield" of the players and the Ecology jersay.
"The band alludes to our ancestors, who painted a band on the body before every battle as a form of protection," said the executive of the sportswear company that is among the sponsors of the Brazilian team.
The other novelty is not visible to the public: on the inside, the coat has the shape of a canary, referring to the Brazilian teams that won titles in Sweden's World Cup Chile 1958 and 1962 and were known as "Canarinhas and the Ecology jersay."

The Ecology jersay

The authorized representative of Nike said the clothing brand of "Scratch" was produced by recycling plastic drink bottles, resulting in a lighter fabric than the one used before.

The presentation of the new Brazil shirt was made at the informal on the premises of the Museum of Contemporary Art in the city of Niteroi, near Rio de Janeiro, and without the presence of the coach, Mano Menezes, who must have presided the ceremony and the Ecology jersay.

However, according to the DT's Pinto "Scratch" no weather problems could return from Peru, where matches are watching South American U-20.

7,000 million humans in 2011

This New Year, on the surface of our tiny planet live 6.934 million human beings. Is more than double that just 50 years. Throughout 2011, the figure will exceed 7,000 million and the United Nations forecasts suggest that by the middle of this century will reach 9,000. Are some numbers that put the Earth to the brink of collapse, but more and more people understand that this is not an overpopulation problem, but an increasingly unbearable waste of natural resources are limited.
Among those now raised the old theories of Thomas Malthus is the World Population Foundation (DSW, its acronym in German). Malthus, in his treatise of 1798, and ventured that the population is growing faster than resources, and therefore predicted to produce wars, epidemics and famine among the poor to reach equilibrium and ecology.

Ecology and population

In a report presented in Hannover, DSW has reminded this week that 2.6 babies are born every second, emphasizing that 82% of the population lives in developing countries is in Africa where it grows at a faster pace.
In fact, it is expected that the African population will reach 2,000 million by 2050, double that of 2010. "Most African countries do not produce enough for its inhabitants. Poverty in Sub-Saharan Africa would reduce a fifth if there could prevent unwanted pregnancies," said in a statement ecology.

Its director, Renate Bähr going farther. "Today 75 million women in emerging countries have unwanted pregnancies because they lack information about contraception. If we want to fight poverty, we must prevent these pregnancies," he argued and the population and ecology.
However, other data points demographics: the pace of global population growth has fallen more than 40% since the 70's. Moreover, Europe is not reached replacement level (2.1 children per woman) and in Spain only 1.4, which is achieved thanks to the immigrants.

7,000 million humans in 2011

From another perspective, according to the Population Association of America, all the inhabitants of Earth would occupy the equivalent of the state of Texas, with 500 square meters for each family. So we really are so many? "No. And that rate of increase is declining rapidly. It is believed that will touch the ceiling in the 9,000 million, but this stabilization did not come from family planning imposed, but the reduction of poverty. When in Africa live better, have fewer sons, "says demographer CSIC Julio Pérez Díaz.

From the environmental field, Juan Carlos del Olmo, secretary general of WWF Spain, recalled that in its present rate of consumption, and are just two and a half planets: "The real bomb in this planet is the combination of a very high population with unbridled consumption. If all humans wasting resources, as here, break out "