Five years ago, the global COVID-19 lockdown briefly halted human activity, triggering a drastic drop in air pollution and temporary banishing of haze. Clear sky over cities reduced Earth’s ability to ...

When NASA’s Apollo 11 astronauts Neil Armstrong and Buzz Aldrin stepped on the moon in 1969 as the first humans, the length and extent of their extravehicular venture were mostly dictated by the ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...