Andy Rouse / 2020VISION / Flock of Knot (Calidris canuta) over sea with wind turbine. Liverpool Bay, UK, December.

Alex Hyde / Offshore windfarm, and coastal town. Colwyn Bay, Wales.

Peter Cairns / 2020VISION / Small wind-powered renewable energy turbine at The Scottish Seabird Centre, North Berwick.

Andy Rouse / 2020VISION / Knot (Calidris canuta) and other waders foraging on tidal flats with wind farm on horizon. Liverpool Bay, UK, December.

Kerstin Hinze / Aerial view of wind turbines in flowering rape fields. Lower Saxony, Germany, April 2012.

Rob Cousins / Solar panels on a cabin cruiser, Bristol floating harbour, UK