EarthEthiopia's blue volcano burns deadly sulphuric gas Erupting on the Danakil Depression, this volcano's lava is the usual orange-red – the blue we see comes from flames formed as the escaping sulphuric gases burn Regulars
EarthInvisible: Photo of a landscape no human can ever see A lush Himalayan hillside has turned shocking fuschia in this photograph of the world beyond the visible spectrum Regulars