Fa il quarto uomo a mahjong.

L'Europa più verde degli ultimi 100 anni 12.10.15

L'Europa oggi è un continente molto più verde di quanto non lo fosse un secolo fa.
In una mappa il processo di rimboschimento e urbanizzazione dell'Unione Europea (Croazia esclusa per motivi temporali) attraverso le ultime dieci decadi.

"More than 100 years ago, timber was used for almost everything: as fuel wood, for metal production, furniture, house construction. Hence, at around 1900 there was hardly any forest areas left in Europe. Especially after World War II, many countries started massive afforestation programs which are still running today," Fuchs told The Washington Post.

As a result, Europe's forests grew by a third over the last 100 years. At the same time, cropland decreased due to technological innovations such as motorization, better drainage and irrigation systems: Relatively fewer area was needed to produce the same amount of food. Furthermore, many people migrated from rural to urban areas, or overseas.