The biggest difference is that in an untreated or poorly treated ballast tank you have already various degrees of rusting in thickness up to about 10 mm, sometimes even more. This rust deposition ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

In our major, annual survey of almost 2,000 science teachers and technicians, insufficient time (58%), challenging student behaviour (48%), and the cost of consumables and chemicals (43%) were cited ...