The article talks about using rainwater to combat water scarcity in North East India. Since this area gets a lot of rain, the researchers suggest capturing rainwater from sloped roofs as a way to store water. By doing this, they found that households can reduce water shortage problems. It's a practical method to have water available when needed, especially in places where groundwater is not always reliable. Overall, using rooftop rainwater harvesting systems can help minimize water scarcity in these areas.