Rolling sand dunes of Arabia, thinning glaciers of Greenland and wildfires of Fort McMurray in Canada were among the images captured by European Space Agency and Nasa satellites last month
Nasa astronaut Jeff Williams captured this image of the ancient Potidea canal in Greece from the International Space Station. For 2,000 years this canal has connected the Thermaikos and Toronaios Gulfs. Williams posted the photograph on Twitter, saying: ‘Coastal currents and erosion over 2,000 years appear to have displaced the two sides of this isthmus, which may explain the coastline’s misalignment.’
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Source: Guardian Environment