Two-meter COVID-19 rule is 'arbitrary measurement' of safety

A new study has shown that the airborne transmission of COVID-19 is highly random and suggests that the two-meter rule was a number chosen from a risk 'continuum', rather than any concrete measurement of safety.

The first frost is the deepest

The first frost of autumn may be grim for gardeners but the latest evidence reveals it is a profound event in the life of plants.

How the fly selects its reproductive male

Even a well-characterized genome, such as that of the Drosophila, the so-called fruit fly, still holds surprises. A team from the University of Geneva (UNIGE), Switzerland, in collaboration with Cornell University (USA) and ...

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