For centuries, humans have gazed up and wondered if we are alone in the universe. In 1960, physicist Freeman Dyson changed the conversation by suggesting some cool celestial tech that would allow us to more easily detect signs of alien civilisations. Dyson suggested that if an alien society’s energy needs outstripped the supply of its … Continue reading Could black holes power alien civilisations?
A team of US scientists has used modelling to find that Australia’s 2019–20 Black Summer bushfires had a more dramatic short-term effect on the Earth’s climate than the 2020 lockdowns caused by the COVID-19 pandemic. Published in Geophysical Research Letters, the research suggests that while the COVID-19 lockdowns had a slight warming effect that will … Continue reading The climatic ups and downs of the pandemic and Black Summer fires