Author: Tony Milligan, Research Fellow in the Philosophy of Ethics, King's College London

klyaksun/Shutterstock There are many home-grown problems on Earth, but there’s still time to worry about bad things arriving from above. The most recent is the asteroid 2024 YR4, which could be a “city killer” if it hits a heavily populated area of our planet in the early years of the next decade. The chances of […]

The idea that aliens may have visited the Earth is becoming increasingly popular. Around a fifth of UK citizens believe Earth has been visited by extraterrestrials, and an estimated 7% believe that they have seen a UFO. The figures are even higher in the US – and rising. The number of people who believe UFO […]