Italy, Tuscany, Lucca, Barga, View across toward the historic hilltop town.

Italy, Tuscany, Lucca, Barga, View across toward the historic hilltop town.

Italy, Tuscany, Lucca, Barga, View across toward the historic hilltop town.

Italy, Sicily, Mount Etna erupting on 8th September 2011.

Italy, Sicily, Mount Etna erupting on 8th September 2011.

Ireland, County Offaly, Clonmacnoise monastery, South Cross preserved in controlled atmospheric conditions.

Nepal, Sagarmatha National Park, Mount Everest from Kala Pattar at sunset.

Climate, Weather, Measurements, Thermometer that measures overnight grass temperature at Bognor weather station.

Climate, Weather, Measurements, 19th Century Marine barometer by S & A Calderara at the Bognor Regis weather station.