10 Year Challenge: How the world has changed in a decade

If you've been pretty much anywhere on the internet in the last couple of weeks, you'll have no doubt come across #10YearChallenge on social media.
If not, the premise is simple - post a 2009 photo of yourself next to a recent one, to show how much you've changed
Millions have taken part, but some have criticized it for being - among other things - narcissistic, ageist and sometimes a bit sexist.

But now people are using the hashtag to reflect on bigger changes. Such as...

Climate change

n this tweet, footballer Mesut Ozil compares what appears to be a large iceberg on the left, and a melted iceberg on the right

According to Nasa, Antarctica is losing about 127 gigatonnes of ice mass every year, while Greenland loses 286 gigatonnes annually.