If you had a one-way ticket to Jan 1, 1999 that departs on Jan 1, 2024, and you are allowed to bring whatever fits into a backpack with you, what would you bring to use to take over the world, and how
Assume that the future can change based on your actions, so any historical information that you bring along with you from the intervening 25 years may quickly drift out of the new realities history.
Edit: also assume that you can be given a healthy 21-year-old body if you want or take your previous self's place.
Further, identification will be provided for you if you were not born at that time.
I come with scientific evidence of the impeding doom that will be brought by climate change and urge the world's powers to reduce greenhouse gas emissions while there is still time! Surely everybody will listen to my proofs and act to protect the world!