With over 35 years in management, science, and consulting, KRBE GmbH brings a wealth of experience in analyzing and assessing transportation systems. His innovative approach integrates infrastructure ...

More than 20 years since the final Concorde flight, is a small US start-up now on course to bring back supersonic air travel?

Density describes how closely packed the particles are in a solid, liquid or gas. There is little difference between the density of a liquid and its corresponding solid (eg water and ice). This is ...