NAIROBI, Kenya, September 1 (IPS) - Open a can of something fizzy and the reason the sugar doesn’t separate immediately is gum arabic, tapped by hand from acacia trees across the Sahel. Key points and original sources are listed below.

• NAIROBI, Kenya, September 1 (IPS) - Open a can of something fizzy and the reason the sugar doesn’t separate immediately is gum arabic, tapped by hand from acacia trees across the Sahel. Spray on perfume and the reason the scent is still there at dinner is fran...S1S2