My research has been broadly concerned with how organisms interact with their environments.
Because I am a physiologist, that broad interest has involved me in studying the clever ways that animals and plants adaptively manage the flows of matter and energy between themselves and their environments. Pursuing that interest to its radical conclusion has led to the publication of two books, which you can read about on my books page.
I have pursued that interest more directly in three broad areas of research:
How ectothermic animals, like these alligators, use their circulatory systems to move heat around their bodies and between their bodies and the outside world. This work has led to some surprising conclusions about how extinct reptiles, like dinosaurs and mammal-like reptiles, managed to regulate their body temperatures. You can read more about this here.
How incubating birds and embryos in their incubated eggs cooperate to manage the flows of heat between them. Sitting on an egg to warm it seems a simple thing, but there's some surprising physiology and biophysics lurking in there. You can read more about it here.
How assemblages of social insects, specifically termites, cooperate to produce "emergent physiology" at a scale much larger than the individuals in the colony. This is my current obsession, and you can read more about it here.
And a host of miscellaneous studies on stone plants, desert beetles, trapdoor spiders and spittle bugs. You can read more about these studies here.