Here's a very interesting Oregon wine research blog on the merits of screw-caps, particularly for bottling young wine. The author goes into some depth to explain how various chemical and other issues are overcome to ensure the wine in the bottle stays good.

Look, if you haven't understood it yet, you never will. Wait, Gaëlle's English school can help. At last, the teacher is back at the centre of the classroom, the driver of good learning.