BJ5299 This animation depicts the Moon and Earth. © Science Source

BL2408 Conceptual image of water hitting earth. This could illustrate climate change. © Science Source

BP4230 Artwork of a melting earth representing global warming. © Science Source

BQ6917 View of Earth's horizon as the sun sets over the Pacific Ocean from the International Space Station (ISS). © Science Source

BV6598 Decrease in the amount of Arctic sea ice from 1980 (top) to 2012 (bottom). © Science Source

BV6599 Satellite image of Japan's Kitakami River before (top) and three days after (bottom) the devastating earthquake and tsunami of March 11, 2011. © Science Source

BY3800 Conceptual artwork of a crumbling Earth. © Science Source

BY4841 Satellite image of city lights and Aurora. © Science Source

BY5919 Plume of steam from Gaua Island, actually the exposed upper portion of a stratovolcano, most of which is submerged beneath the Pacific Ocean. © Science Source

SA7238 Cutaway illustration of the internal structure of the Earth. © Science Source

SB1072 Illustration of the Americas seen from space. © Science Source

SB1819 Conceptual artwork of the Earth floating in a gray ocean. © Science Source

SB5883 Artist's conception of what the Earth might have looked like early in its history. © Science Source

SE8324 Colored satellite image of low atmospheric ozone levels over Antarctica, September 2004. © Science Source

SG2861 Sunrise from space, computer artwork. © Science Source

SK1790 Global warming. Earth inside an incandescent lightbulb. © Science Source

SL9665 Environmental issues, conceptual computer artwork. © Science Source

SL9757 Global warming, conceptual illustration. Earth with a thermometer. © Science Source

SM8685 Illustration of Earth's layers. © Science Source

SN8670 The Big Bang and our Universe today. © Science Source

S4901 - Global temperature. Satellite map of the world's average surface temperature in January 1979. Colors represent temperature as follows: mauve = -38 degrees C; blue = -36 to -12 degrees C; green = -10 to zero degrees C; yellow = 2 to 14 degrees C; pink & red = 16 to 34 degrees C; deep red & black (as in Australia) = 36 to 40 degrees C. The data for the map was recorded by the High Resolution Infrared Sounder (HIRS) and Microwave Sounding Unit (MSU) instruments on board one of the satellites of the US National Oceanic and Atmospheric Organization (NOAA). © Science Source

D0954 - The globe of the Earth, as seen from the moon, silhouetted against a starry sky. © Science Source

SM1969 Global issues solution, conceptual image. Person placing the final piece into a puzzle of a globe of the Earth. This could represent finding the solution to the Earth's environmental and humanitarian problems. © Science Source