Humans are trichromats, meaning we perceive three primary colours: blue, green and red. The retina in a human eye can detect light between wavelengths of 400 nanometres (lowest-violet) and 700 nanometres(highest-red), a range known as the visible spectrum.

In the middle of the spectrum resi...

Some scientists and researchers also believe that because our eyes are at the peak of their perception to detect the wavelengths corresponding with the colour green, the shade may calm us down.

With less strain to perceive the colors, our nervous system can relax when perceiving the tone.

Bananas, though widely considered to be a yellow fruit, start off as green due to the presence of chlorophyl. Just as grass and leaves have chlorophyll to give them colour, so do fruits.

Located in the cells of plants, chlorophyl plays a crucial role in photosynthesis, allowing plants to ha...

The peels of bananas are bright green in colour until the chlorophyll inside the peel begins to break down. As the fruit ripens, the molecule in the peel breaks down and we observe a colour change from green to bright yellow – and we prefer to eat yellow bananas because they are sweeter.

Wh...

This change in colour also applies when glancing over an aisle of bright bell peppers. Our eyes help us find our favoured ripeness and sweetness. Green peppers, with more chlorophyll, are less sweet. As they turn yellow and red, the peppers become sweeter.

When we’re enjoying a salad, a bro...

Natural environments, full of green vegetation, might help you live longer.

A 2016 study found that living in or near green areas can was linked with longer life expectancy and improved mental health in female participants.

After ...