A few years ago I was lucky enough to travel around Mexico. One day we took a boat ride through a national park. The scenery was amazing – cruising through a gorge and looking up to see waterfalls and monkeys jumping through the trees, it was a really beautiful place. Then we came across a crocodile (thankfully a reasonable distance away!) resting on the shore – it was surrounded by rubbish, mainly plastic bottles. They were floating in the water and accumulating on the banks of the river, it was awful to see. Such a pristine place, tainted by our pollution. Read more