Why showy signals win in evolution By Paul Katula • Sep 19, 2025 In this article/set of test questions about high school biology, we consider what different species like about the opposite sex.
Social distancing affects a fish’s brain By Press Release • Dec 4, 2020 The amount of a chemical in the brain of zebrafish is altered by the population density of the animal's social environment.
A badger buries a cow in Utah, all by itself By Press Release • Apr 1, 2017 We know a little more about how scavengers cache their food supply in the Utah desert, thanks to some biologists at the University of Utah.
Carson won’t ‘believe in’ evolution. Should you? By Paul Katula • Sep 10, 2015 A Republican presidential candidate and neurosurgeon says he doesn't "believe in" evolution. Strange indeed. But so what?
The eaten outpace the eaters in biomass pyramid By Paul Katula • Sep 4, 2015 Ecosystems have a carrying capacity, the maximum biomass each trophic level can support given finite resources. Here's the pattern.
(HS bio) Obesity in toddlers drops; cellular respiration By Paul Katula • Mar 1, 2014 The obesity of toddlers has dropped over 10 years, and that's because of some public policy about the how the body gets energy; cellular respiration resources included.