Let's explore scientific topics tonight, with this compilation of four episodes: - part 1 is about the shapes and patterns in nature. Why do certain shapes come back, rather than others, what are these favoured shapes, and what is the golden ratio? - part 2 is a presentation about bees: species, anatomy and social life. - part 3 deals with the decay of structures and artifacts built by civilizations, and what traces they could live behind; this is at the heart of the Silurian Hypothesis. - part 4 tells you all about cats: their evolutionary history, their species, and what distinguishes them from other mammals. Timestamps: 0:00 Shapes of Nature 1:08:58 Bees 2:04:39 Silurian Hypothesis 3:15:52 Cats