For China, India, and many other rapidly-developing countries, water scarcity will increasingly and negatively affect growth-with 2.7 billion people living in water scarce basins in these countries alone by 2050, up from 1.4 billion today.
Replace window putty if it has become old and cracked. Window putty commonly is referred to as glazing compound. It is made to remain semi-flexible throughout its lifetime, so it both firmly holds the glass in place and keeps the edges of the glass leakproof. Properly installed putty looks like an extension of the window frame, and can be painted to match.
To complete the job, smooth out the new glazing compound (Photos 4 and 5). Oil-based putty is easier to work with when it's warm. To heat it, set the can in a bowl of hot water for a few minutes. Remember that oil-based putty remains soft for days, so be careful not to touch it after smoothing.n older single-pane windows, the glass is usually surrounded by putty called âglazing compound,â which holds the glass in place and seals out the weather. This putty often lasts decades, but over the years it becomes rock-hard, cracks and even falls off the window.