Natural selection can explain “the survival of the fittest but not the arrival of the fittest.”
An example of this devolutionary process on a showy scale? Flightless island birds, devolved from birds that could fly.
The authors offer a selectionist explanation, which is nevertheless uncertain. Note the repeated use of the subjunctive.
Cancel culture is becoming surreal. Or should I say even more surreal? “Exotic birds” are now judged to be offensive. What next?
An international team reasoned there had to be a purpose for sleep. In one of the largest datasets ever collected, they believe they found two functions.