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.
In the UK, casement windows were the most common house window before the sash window was introduced, and usually contained leaded glassâglass panes held in place with strips of lead (called lead cames; leaded glass is not to be confused with lead glass, which refers to the manufacture of the glass itself). casement is a window that is attached to its frame by one or more hinges.