Mali, Pays Dogon, Tirelli, Children sitting at desks chalking on their slates in classroom at the school during french lessons.

England, Cumbria, Keswick, Slate wall of building.

Bangladesh, Chittagong, Comilla, BRAC students in a primary classroom with peer marking.

Bangladesh, Chittagong, Comilla, BRAC students in a primary classroom.

Ireland, County Kerry, Killarney, Modern Roman Catholic church at Fossa.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.

Architecture, Alternative Energy, Electricity, Solar photovoltaic roof tiles or slates on new houses by Linden Homes in Graylingwell Park.