During the 200 million years that dinosaurs roamed the land, the oceans were ruled by formerly land-dwelling reptiles. Of these, ichthyosaurs adopted dolphin-like forms, plesiosaurs became sea lion-like, and mosasaurs occupied crocodile-like ‘ambush’ predator roles.
Our warm bodies come at such a huge metabolic cost that experts cannot agree on why this ability has evolved at all. How do we and other animals come to stay warm, whilst keeping our cool?
Although this is intended as a light-hearted guide to areas of science that might interest you, it serves to illustrate the inter-disciplinary nature of science.