There are many companies that actively work to minimize their environmental impact while supporting causes such as animal conservation and local indigenous communities. I have a list, so let's talk.
Do your part as a responsible traveler. Those cute elephants that give rides have been cruelly trained and beaten into submission. Most people don't know---but, now you do.
Google "The Truth About Reef-Safe Sunscreen" 2-7-19 Consumer Reports for more information. Briefly, wear sun protective clothing and choose oxybenzone-free sunscreen.
You can purchase bottles that have built-in filters and avoid buying water bottles. I also like foldable "Vapur" brand bottles (pictured). No filter, but great in cities like Rome that have abundant, clean water from public fountains.
Share your tips and research, and I will post them here.