Environmental pressures are not just global - they can also be felt keenly on a local level.
A Malaysian child wears smog mask to protect him from pollution
While some changes might seem remote, like melting icecaps, others are on our doorstep.
A species of Mediterranean insect has set up home in London; a sign, some say, of global warming.
In China, some cities are so polluted that pedestrians don't feel safe without a face mask.
As part of our Planet under Pressure series, we would like you to send us your pictures - and stories - of how environmental change is affecting your life.
Perhaps your image will be of a local factory which belches out noxious fumes, or a newly-erected wind farm, or the first flower in a too-early spring.
We will be compiling the best photos from around the world in a photo gallery, so please send us your name, where you live and a brief caption explaining what your picture shows.
E-mail them to firstname.lastname@example.org
If you submit an image, you do so in accordance with the BBC's Terms and Conditions.
In contributing to BBC News you agree to grant us a royalty-free, non-exclusive licence to publish and otherwise use the material in any way that we want, and in any media. (See the Terms and Conditions for the full terms of our rights.)
It's important to note, however, that you still own the copyright to everything you contribute to BBC News. This means you are perfectly free to take what you have produced and re-publish it somewhere else. Please note that if your image is accepted, we will publish your name alongside it on the BBC News website. The BBC cannot guarantee that all pictures will be published and we reserve the right to edit your comments.