Earth on a hot

A large part of Europe and North America is facing an unusually hot summer. Many people ask the question that has been repeated over and over: 'Is it because the whole world warms up?'.

A boy is "cooling" from a tap in Berlin on July 19 - (Photo: Xinhua / AFP)

The hot sun killed at least 21 people in France, including a 15-month-old child, further raising concerns about the repeat of the heat wave in Europe in 2003, causing at least 15,000 people in France and 20,000 people. killed in Italy.

Many large areas of the US and Canada are also witnessing record high temperatures this month.'We are being cooked,' said American meteorologist Dennis Feltgen of the National Weather Agency.

Many scientists believe that the global warming and will continue to heat up due to 'greenhouse effect' from emissions due to human activities are increasingly released into the air. However, there are many people who think that we should not be too much for global warming or greenhouse effect.

Skeptics of this hypothesis (predicted to cause droughts and floods in this century unless greenhouse gas emissions are cut) say the press has taken advantage of these hot summer days to launch The great influence of global warming. According to them, record heat waves can be considered part of a high and low natural cycle.

However, many scientists say the global trend is warming up is real. The US Space Agency (NASA) said 2005 was the hottest global year in more than a century and the last three years have been the hottest three years since the 1890s.

The US National Weather Data Center said the first half of 2006 was the hottest six months since 1895. 'Global temperatures from 1850 have risen to 0.7oC and will continue to increase by 2-5oC. in this century, "said Philip Jones, professor of climate studies at the University of East Anglia in England.

In addition to temperature, there is more evidence that the Earth is heating up, which is an increase in sea level and a decrease in snow . Global sea level is increasing by about 1.5 mm per year and has increased by about 20 cm since the late 1800s.

Due to many uncertainties in climate change science, a UN agency - the Multi-governmental Climate Change Investigation Commission - was established in 1988 to compare and test the Their databases and reports are the main influencing factors for politicians to decide what actions to take in climate change.

The multi-governmental climate change survey committee will publish its fourth report next year.

T.VY