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.
Step 1: Remove Old Putty on Windows. Before putting more putty on windows you will need to remove the old putty that is already there. Use a putty knife to work at the putty and break it up into smaller pieces. Scrape away at the putty until you have removed most of what you can.