November 17, 2018

Greener equals cleaner: Lessons from the Streets of Copenhagen

I don’t know how free from litter the streets in your town or city are, but in Copenhagen, Denmark, the streets are pretty clean. Indeed, the Danish capital is one of the cleanest in Europe. Mind you, this has not always been the case. There is a tendency towards littering in Copenhagen, but the City […]

The Why Axis

You are probably well aware that controlled experiments are carried out in laboratories where one sample, say of microbes, is given a treatment and another is given no treatment (the control) and the results are compared. The idea is to hold constant all influences other than the one you wish to test. The same approach […]