Now... the most pressing environment concern you will here in the press is that of climate change.
Climate changes is caused mostly by the combined actions of humans who use fossil fuels, to fuel their cars, power their homes and workplaces.
This is where place actions in one place really do travel and effect another place. The atmosphere is shared by everybody on Earth. If a person in the UK uses their car and it is powered by fossil fuels, the emission reach the atmosphere, it’s the same atmosphere that is shared by somebody say, in Africa or Asia.
Likewise if trees are felled in the Amazon rainforest the total carbon capture capacity is removed from the planet.