Evolution

Though homosexual behavior has been rewarded in over 1,000 organisms, it can be an evolutionary puzzle; since reproduction can't happen, there is a fitness cost, so why do it? A new paper argues it's…

Few topics arouse as much interest and controversy as sex. This is hardly surprising. The biological continuance of the species hinges on it – if human beings stopped having sex, there would soon be…

One of biology's most fundamental sets of building blocks may have special properties that helped bootstrap itself into its modern form - or it may be "cui bono?" thinking where people find an event…

Discovery of a "remarkably complete" cranium  (MRD-VP-1/1, shortened to MRD) in February 2016 from a 3.8-million-year-old early human ancestor from the Woranso-Mille paleontological site,…

Having one of the most powerful bites in the animal kingdom, crocodiles must be able to bite hard to eat their food such as turtles, wildebeest and other large prey.  Well, so do we, but we don'…

Ancient pigs went through a complete genomic turnover after they arrived in Europe, according to a new study. They were domesticated in the Near East and logically would genetically resemble the Near…

Mammals living in diverse types of environments, from ocean swimmers to mountain dwellers, have a diverse variety of protective skins adapted to the elements and now one of the largest comparative…

Some species have thrived only because they are food sources. Cows, for example, would be endangered and likely extinct if not for human animal husbandry. The same goes for many vegetables. They…

Free fingers have obvious advantages on land, and don't even get us started on opposable thumbs, but provides aquatic or gliding animals with more suitable webbed ones. But both amphibians and…

Cancer starts as a single rogue cell whose mutations then trigger aggressive growth, damaging the health of the organism. But if cancer cells were accumulating harmful mutations faster than they…