Earth Day is nearly upon us. The April 22 event, now in its 45th year, is meant to help draw attention to environmental issues, but remember, there are 364 other days to care about the planet.
Things have changed in the U.S. since the first Earth Day, in 1970, when rampant air pollution, burning rivers and more frequent oil spills were major concerns. Despite the improvements here, other countries around the world still face issues like air and water pollution.
Take a look at these Instagram photos that capture the world's ongoing environmental challenges, and keep in mind to make every day Earth Day.