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Why countries signed Paris Agreement: Photos of human activity on Earth

These 20 images of Earth over the past 70 years show why countries signed the Paris Agreement

DVIDSHUB/flickr
President Donald Trump is expected to announce on Thursday whether the US will withdraw from the landmark Paris Agreement on climate change.

The international accord, which was signed by every country except Nicaragua and Syria, lays out a framework for countries to reduce their fossil-fuel emissions to help keep the planet's overall temperature from rising by more than 2 degrees Celsius.

Since the Industrial Revolution, humans have had an unmistakable impact on Earth that has accelerated over time. This impact pops out in sharp relief when you look at this collection of images of what specific areas look like now compared with about 70 years ago.

In some cases, the images — mostly from NASA, unless otherwise noted — were taken as far as 50 years apart; in others, they were snapped within 10 to 15 years of each other.

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Summary | 6 Annotations
whether the US will withdraw from the landmark Paris Agreement on climate change.
2017/06/02 09:15
In some cases, the images — mostly from NASA, unless otherwise noted — were taken as far as 50 years apart;
2017/06/02 09:15
Photographs from the 1940s to 2000s show the drastic effect of climate change on our planet's glaciers
2017/06/02 09:15
Mount Elgon National Park in Uganda in 1973 compared with 2005.
2017/06/02 09:16
The deforestation of a forest in Salta, Argentina, is starkly visible in this pair of photos from 1972 and 2009.
2017/06/02 09:16
Deforestation is also prevalent in the South American Atlantic Forest in Paraguay — here's how it looked in 1973 versus 2008.
2017/06/02 09:16