LONDON, ENGLAND - DECEMBER 01: The 4million bricks that make up London's longest canal tunnel are inspected today. The bricks date back to the 1800s when the Islington Tunnel on the Regent's Canal was built. The work is part of a Â£45million programme being spent by the Canal & River Trust this winter to repair and restore the nation's waterways at The Regent's Canal on December 1, 2015 in London, England. (Photo by John Phillips/Getty Images for Canal & River Trust)
Migrants protest behind a fence against restrictions limiting passage at the Greek-Macedonian border, near Gevgelija, on December 1, 2015.
Since last week, Macedonia has restricted passage to northern Europe to only Syrians, Iraqis and Afghans who are considered war refugees. All other nationalities are deemed economic migrants and told to turn back. Macedonia on November 29 finished building a fence on its frontier with Greece becoming the latest country in Europe to build a border barrier aimed at checking the flow of migrants. / AFP / ARMEND NIMANI (Photo credit should read ARMEND NIMANI/AFP/Getty Images)
BEIJING, CHINA - NOVEMBER 30: A Chinese man wears a protective face mask as he passes by the CCTV building on a day of heavy pollution on November 30, 2015 in Beijing, China. China's capital and many cities in the northern part of the country recorded the worst smog of the year with air quality devices in some areas unable to read such high levels of pollutants. Levels of PM 2.5, considered the most hazardous, crossed 600 units in Beijing, nearly 25 times the acceptable standard set by the World Health Organization. The governments of more than 190 countries are meeting in Paris this week to set targets on reducing carbon emissions in an attempt to forge a new global agreement on climate change.(Photo by Kevin Frayer/Getty Images)
SANTA CRUZ PROVINCE, ARGENTINA - NOVEMBER 29: The Perito Moreno glacier stands in Los Glaciares National Park, part of the Southern Patagonian Ice Field, on November 29, 2015 in Santa Cruz Province, Argentina. Certain areas of glacial ice take on a bluish hue due to light refraction. The Southern Patagonian Ice Field is the third largest ice field in the world. The majority of the almost 50 large glaciers in Los Glaciares National Park have been retreating during the past fifty years due to warming temperatures, according to the European Space Agency (ESA). The United States Geological Survey (USGS) reports that over 68 percent of the world's freshwater supplies are locked in ice caps and glaciers. The United Nations climate change conference begins November 30 in Paris. (Photo by Mario Tama/Getty Images)
Children touch the hand of Pope Francis as he visits a refugee camp after arriving in Bangui on November 29, 2015. Pope Francis arrived as 'a pilgrim of peace' in conflict-ridden Central African Republic on November 29, flying in from Uganda on what will be the most dangerous destination of his three-nation Africa tour. (Photo credit should read GIUSEPPE CACACE/AFP/Getty Images)
IDOMENI, GREECE - NOVEMBER 28: A migrant reacts in front of a Macedonian police cordon during clashes between migrants and Macedonian police as the migrants protest against the building of a metal fence at the Greek-Macedonian border on November 28, 2015 near Idomeni, Greece. Tension flared on the Greek side of the Greece-Macedonia border when a migrant who was stopped from crossing into Macedonia, suffered severe burns when he climbed on top of a stationary train carriage and touched an overhead power cable. Last week, Macedonia imposed tougher border controls, only allowing entry to those fleeing war-torn countries. (Photo by Milos Bicanski/Getty Images)
PARIS, FRANCE - DECEMBER 04: A 'Don't forget Charlie' sign is placed at the bottom of the Place de la Republique statue as people continue to leave tributes to victims at attack sites in Paris on December 4, 2015 in Paris, France. On Friday, November 13th, 130 people lost their lives after the most deadly terrorist attack in French history. (Photo by Aurelien Meunier/Getty Images)
CALAIS, FRANCE - DECEMBER 03: Migrants make their way across a flooded path in the camp known as the 'New Jungle' on December 3, 2015 in Calais, France. Thousands of migrants continue to live in the makeshift camp in the port town in northern France, where they try and board vehicles heading for ferries or through the tunnel in an attempt to reach Britain. (Photo by Jeff J Mitchell/Getty Images)
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Headlines this week were dominated by shootings in the United States, with a Planned Parenthood clinic in Colorado being targeted on Sunday and over a dozen people being killed in San Bernardino, California on Wednesday. We also saw severe smog and pollution continuing to cover parts of China, fatal floods hitting parts of India, and Pope Francis taking a trip to Africa.
Click through the slideshow above to see photos from all of these stories and more, and be sure to check back next weekend for our selection of the best photography from the next seven days.