The post reflects on the ongoing challenges of addressing climate change, particularly the failures of international conferences like COP3 and COP21 to effectively curb carbon emissions. Despite some progress, global carbon dioxide levels continue to rise, with projections indicating significant temperature increases if current trends persist. The urgency for meaningful action remains.
I am still surprised how many articles on otherwise reputable websites when writing about scientific topics are riddled with errors and have clearly been written by lazy journalists with no knowledge of the subject they’re talking about. One of the worst examples was an article on the December 2023 solstice which recently appeared on a… Continue reading Correcting Scientific Misconceptions: The December Solstice
This year, the northern hemisphere winter solstice will fall on 22 December. On this date there are the fewest hours of daylight and, during the day, the Sun reaches its lowest elevation. The origin of the word solstice is from two Latin words: sol, which means Sun, and sistere, to stand still. At the time of the winter… Continue reading December 22 2023 – the solstice
Update 30 August 2025 I have extensively expanded and rewritten all three “A Short Guide to…” e-books. I will make these books available on Kindle for a competitive price. However, in future I won’t do any deals where I offer free or discounted prices on these books for a limited time period. I believe the books offer… Continue reading Books from Explaining Science 2023
In this post I’ll talk about curvature, what terms such as flat, positive and negative curvature mean and how this applies to the Universe. I won’t use complex mathematical definitions here, but intuitively curvature is a measure of how much a two-dimensional surface deviates from being flat. This concept can be extended to any number… Continue reading Is the Universe curved?
