There is a huge amount of variety in the colours and patterns exhibited by plants and animals. However, most of this variation is fixed at the individual level; only when comparing individuals do we see differences. The ability to change your colour during your lifetime is a trait possessed by only a few animals, which have converged on remarkably similar mechanisms. Colour changes that occur during an animal’s lifetime can occur slowly, with seasonal changes or age (morphological colour change). More dramatically, and more interestingly, some species also have the ability to change their colour or pattern very rapidly, in response to environmental or social conditions (physiological colour change).
Nine to five. The whole western world seems to based around this simple concept. And perhaps for many people this seems to work just fine. If you’re a morning person, the nine to five regime works perfectly with your natural biological rhythms. But what if you’re an evening person? Research has shown a real genetic distinction between morning and evening people, and this distinction affects not just your preferred sleep-wake cycle, but daily body temperature rhythms, and variation in concentration and attention span.
Estimates suggest that just 15% of the population are true morning people, with about 25% being true night owls. The rest of the population is intermediate. If such a small fraction of the population is completely suited to a nine to five schedule, then why has this time frame become the standard? And does this mean that 85% of the population are not working to their full potential, simply because they are being forced into an unnatural work rhythm?