Engineering is the design and construction of systems and structures for influencing the world around us and enhancing our experience within it. Engineers use the fundamental principles of ...

When seawater penetrates concrete in road tunnels, a biofilm is formed that breaks down the concrete. This can lead to high costs and the risk of damage if stone and concrete drop from the tunnel roof ...

International Viewpoint, the monthly English-language magazine of the Fourth International, is a window to radical alternatives world-wide, carrying reports, analysis and debates from all corners of ...