Relax time at weekend, and let's see what happened around us during past two decades. The Global Environmental Outlook 4 was released in Oct 26, at Beijing China. This series of report was finished by 390 experts and the global environment are reviewed, the key words atmosphere, climate change, land degradation and forest cover, water resource and fish stock, biodiversity .etc are included. It provided the overview of the global social and economic trends, and most importantly, the human being's opportunities and challenges brought by these change. This report is full of statistic dates and color figures, so it would be easy to read. The full contents could also be found here