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Oak Tree Forest
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Canyon Landscape Rock
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Mint
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Scenic view of sea against sky
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Atmosphere Sky Clouds
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Potter's wheel Artist Wheel
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Rear view of two men with city in background
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Grand Canyon
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Canyon Ravine Valley
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Panoramic View of Buildings
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Spice Food Health
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Person Adult Caucasian
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The skies over northern China were shrouded with a thick haze in late December, 2013. The Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite captured this true-color image on December 23.  The dense, gray haze obscures almost all the land and much of the coastal waters from view south and east of the Taihang Mountains. Clearer air covers the region north of the mountains, although fingers of haze roll through most river valleys. The cities of Beijing and Hebei, both west of the Bohai Sea are complete enshrouded.  By December 24 the smog levels in some area exceeded World Health Organization-recommended levels by 30 times, according to Bloomberg News. The concentration of PM2.5, which are fine air particulates, were reported at 421 micrograms per cubic meter at 2 p.m. near Tiananmen Square in Beijing, while levels were 795 in Xi’an and 740 in Zhengzhou. The World Health Organization (WHO) recommends 24-hour exposure to PM2.5 concentrations no higher than 25 micrograms per cubic meter.  While not the sole cause of haze and pollution, the use of coal as a very cheap energy source adds to the problem, particularly north of the Huai River. Prior to 1980, the government policy provided free coal for fuel boilers for all people living north of the Huai River. The widespread use of coal allows people in the north to stay warm in winter, but they have paid a price in air quality.  According to Michael Greenstone, a Professor of Environmental Economics at Massachusetts Institute of Technology (MIT), whose research team published a paper on sustained exposure to air pollution on life expectancy in the region, air pollution, as measured by total suspended particulates, was about 55% higher north of the Huai River than south of it, for a difference of around 184 micrograms of particulate matter per cubic meter. The research, published in Proceedings of the National Academy of Sciences in July, 2013, also noted life expectancies were about 5.5 years lower in the north, owing to an increased incidence of cardiorespiratory mortality.  Air pollution is an on-going issue for the government of China, and Beijing’s Five-Year Clean Air Action Plan aims to reduce overall particle density by over 25 percent on the PM2.5 scale by 2017, and also takes aim at shutting down all coal-burning plants.  Credit: NASA/GSFC/Jeff Schmaltz/MODIS Land Rapid Response Team   <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b>  <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href="http://twitter.com/NASA_GoddardPix" rel="nofollow">Twitter</a></b>  <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b>  <b>Find us on <a href="http://instagram.com/nasagoddard?vm=grid" rel="nofollow">Instagram</a></b>
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Autumn beautiful colors conifer
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Woman Standing on Street Graffiti Painted Wall during Daytime
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Landscape Water Sky
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Candy flowers plants
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Architecture building city dusseldorf
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Sun Sky Light
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Transportation system Sky Crane
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Groningen central train station lamp post
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Sun Sky Light
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Sky Sun Clouds
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Canyon Ravine Valley
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The Nile River Delta of Egypt (30.0N, 31.0E) irrigated by the Nile River and its many distributaries, is some of the richest farm land in the world and home to some 45 million people, over half of Egypt's population. The capital city of Cairo is at the apex of the delta. Just across the river from Cairo can be seen the ancient three big pyramids and sphinx at Giza and the Suez Canal is just to the right of the delta.
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Valley Mountain Landscape
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Trees autumn water river
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Blur broken close up container
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Sky Building Architecture
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There was a time when the Northwest Passage was a sort of maritime Holy Grail, a route so desired and sought after, but so elusive. For most of the recorded history of North America, the Passage has been nearly impassable and often deadly. But with the modernization of ships and the warming of the Earth, cruising and sailing through the Canadian Archipelago from Baffin Bay to the Beaufort Sea has grown more common and easier. But it’s not necessarily easy.  The top image above shows the Northwest Passage as it appeared on August 31, 2015, to the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi-NPP satellite.  Read more: <a href="http://earthobservatory.nasa.gov/IOTD/view.php?id=86589" rel="nofollow">earthobservatory.nasa.gov/IOTD/view.php?id=86589</a>  NASA Earth Observatory images by Jesse Allen, using VIIRS data from the Suomi National Polar-orbiting Partnership. Suomi NPP is the result of a partnership between NASA, the National Oceanic and Atmospheric Administration, and the Department of Defense.   <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b>  <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b>  <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b>  <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>
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High angle view of flowers for sale in market
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Red and Brown Concrete House Near to White and Gray Wooden House during Daytime
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Flowers red pink plant
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Canyon Valley Ravine
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Pink Kalanchoe
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Brown Wooden Window Frame During Daytime
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Graffiti spray paint wall
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Canyon Mountain Valley
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Statue of Statues
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Canyon Landscape Valley
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STS076-E-05264 (22-31 March 1996) --- STS-76 KidSat Earth View (Morocco)
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Architecture City Building
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White Apple Decor on Glass Wall
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Red Surface
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Bright spokes and the shadow of a moon grace Saturn B ring in this NASA Cassini spacecraft image. Spokes are radial markings scientists continue to study, and they can be seen here stretching from the far left to upper right of the image.
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Ice Sky Clear
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Sea Rock Under White Clouds Blue Skies during Sunset
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Canyon Depression Adult
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Man suit flowers petals
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Atmosphere Sky Clouds
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Color Design Black
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3 Person on Body of Water at Daytime
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Black and Yellow Round Lantern
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Roof Vault Protective covering
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Swamp Surrounded With Green Grasses Near Pathway during Golden Hour
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Ocean Body of water Foam
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No parking sign bricks
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Landscape Forest Tree
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Eyeglasses arts crafts
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Crystal Ice Snow
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This high-resolution stereo anaglyph captured by NASA Cassini spacecraft of Saturn moon Enceladus shows a region of craters softened by time and torn apart by tectonic stresses. 3D glasses are necessary to view this image.
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Sky sunset landmark water
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Bouquet Flower Flowers
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Banknote bill collect dollar bill
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Rocks cliffs
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Valley Mountain Landscape
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Business 3d Design
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Sun Sunset Sunrise
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The remnant moisture from what was once Hurricane Patricia and moisture from the Gulf of Mexico were being transported north by a trough of low pressure over Wisconsin. The clouds and moisture were streaming into the Eastern third of the U.S. on October 28, 2015. The hybrid system was generating windy conditions which were seen from NASA's RapidScat instrument, while NOAA's GOES-East satellite captured an image of the impressive and sizeable cloud cover.  Read more: <a href="http://www.nasa.gov/feature/goddard/patricia-eastern-pacific-2015" rel="nofollow">www.nasa.gov/feature/goddard/patricia-eastern-pacific-2015</a>  <b><a href="http://goes.gsfc.nasa.gov/" rel="nofollow">Credit: NOAA/NASA GOES Project</a></b>  <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b>  <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.  <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b>  <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b>  <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>
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Business Happy Design
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Reef Water Texture
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Abandoned broken building decay
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Dome Roof Architecture
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Sun Star Celestial body
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Blue background structure
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Flower Design Pattern
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Autumn autumn leaf autumn leaves bush
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Brown Rock Formation Under Orange Clouds and Blue Sky
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Design Color Black
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Close up of flowers over white background
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Person Silhouette Near the Fire
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