How many fish constitute a school?

Physicists are also interested in fish — above all when they are researching the formation of structures. A research team has examined the schooling behavior of zebra danio (Danio rerio, also known as ‘zebrafish’) using methods from the field of multi…

Greener streets linked to better sleep

Living on a greener street or having views of blue spaces from your home may help you sleep for longer. New research across 18 countries found that living on greener streets — those with visible grass, trees, and vegetation — is linked to better sleep.

A self-cleaning wall paint

Beautiful white wall paint does not stay beautiful and white forever. Often, various substances from the air accumulate on its surface. This can be a desired effect because it makes the air cleaner for a while — but over time, the color changes and ne…