Being in space destroys more red blood cells

A world-first study has revealed how space travel can cause lower red blood cell counts, known as space anemia. Analysis of 14 astronauts showed their bodies destroyed 54 percent more red blood cells in space than they normally ...

Climate change and COVID-19

The lockdowns, travel restrictions, and remote working and remote learning that became obligatory for many people around the world during the COVID-19 pandemic may have been inconvenient for some of them but they also represented ...

Science fiction revisited: Ramjet propulsion

In science fiction stories about contact with extraterrestrial civilisations, there is a problem: What kind of propulsion system could make it possible to bridge the enormous distances between the stars? It cannot be done ...

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