Perception, deception, distrust – Oh My!

Lions, hyenas and mobs (oh my!)

Understanding the factors that facilitate the emergence of cooperation among organisms is central to the study of social evolution. Spotted hyenas Crocuta crocuta frequently cooperate to mob lions Panthera leo, approaching the lions as a tightknit group while vocalizing loudly in an attempt to overwhelm them and drive them away. Whereas cooperative mobbing behavior has been well documented in b...

Graphs, branchwidth, and tangles! Oh my!

Branch decomposition-based algorithms have been used in practical settings to solve some NP-hard problems like the travelling salesman problem (TSP) and general minor containment. The notions of branch decompositions and branchwidth were introduced by Robertson and Seymour to assist in proving the Graph Minors Theorem. Given a connected graph G and a branch decomposition of G of width k where k...

Lions, tigers, and pandas, oh my.

Andrology and the other disciplines that comprise the ‘‘reproductive sciences’’ have untapped potentials that go far beyond usual academic settings and research subjects (eg, humans and farm and laboratory animals). There is an amazing array of 40 000 vertebrate species on our planet that include thousands of mammals, birds, reptiles, amphibians, and fish. These numbers are dwarfed by millions ...

Lions and tigers and bears, oh my!

Monsters and dragons and sharks--oh my!