Europe's most active volcano, Mount Etna on Sicily, is erupting again, sending tourists running away from a huge plume of ash and smoke in the air and lava flowing down its slope.

Delphiniums contain the blue to purple anthocyanin delphinidin, also found in other blue or purple flowers and fruits, blueberries for example. Delphinium Blue Nile (1.5m tall), with semi-double ...