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The average air temperature rose worldwide by 0.8 °C (1.44° F) in the last 100 years. This is the highest temperature rise within a century in the past 1,000 years.

The consequences of this warming are clearly noticeable: storms, floods, and extreme droughts are increasing while the glaciers are shrinking at an alarming speed. Not only the air: oceans have warmed, too.

The last time the earth was warmer than today (about 125,000 years ago), the ice at the poles melt so much that sea levels rose by more than 4 meters.

However, the forecasted one-meter raise in the sea level would be enough to flood island states and coastal cities and to displace millions of people. About half of the world's population lives in coastal regions. Soil erosion, desertification and water shortages will make food production very difficult in many areas of the world.

Climate change, caused by greenhouse gases, is real. We can’t stop it; we can only slow it down. The majority of scientists around the world support this view. However, there are contrarian opinions.

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