One day after President Trump pledged at his inauguration to be a “peacemaker and unifier,” the U.S.’s two most powerful adversaries agreed to work more closely on overhauling a world order ...

If your home was built after the 1930s, the chances are that its external walls are made of two ‘skins’ with a gap of around 50mm between them. This means they are ‘cavity walls’ and the gap between ...

If your home is made of brick, and the bricks have an alternating long-short-long pattern, then the walls are likely to be solid. If you can see only the long edge of the bricks, then it’s almost ...