Widely acknowledged as one of the most widely distributed photographic images in existence, the "Blue Marble" was ...

Happy Earth Day! Activism on behalf of the Big Blue Marble is heating up — but, sadly, so is the planet itself. Earth — so hot right now. The Earth’s surface temperature is rising thanks to ...

April 22 is traditionally known as Earth Day, the occasion where we pause as temporary travelers on our 'blue marble' to ...

The "Blue Marble" was the first photograph of the whole Earth and the only one ever taken by a human. Fifty years on, new images of the ... the Earth as this great big gorgeous blue dot ...