Flood in Bangladesh: Environmental hazard

In Bangladesh, the city of Dhaka is floating under water and more than 120 million people are suffering from the lack of food and water. In situations like this, drinking water seems to be a big struggle everyday. The suffering is greater for the children and the elderly. Global warming is vital throughout the world since coutries such as Bangladesh with many rivers are being flooded each year. Please help the country in your own ways.