English
Português 
Português 
Why does pool water turn green (even with chlorine!)?
More than once you may have wondered why pool water turns greenish even when chlorine has been added...
Preserves, something of Napoleon in your kitchen
France, 1795. The newspaper Le Monde proposes a contest that rewards with 12,000 francs to whoever i...
Before showering in hotels, let the water run to avoid legionellosis.
Legionellosis is considered one of the so-called “rare” diseases, affecting “only&...
Where does the pool smell come from?
It is customary to perceive the “smell of chlorine”, especially in heated indoor ...