Other tips here are great. Another thing that works surprisingly well - throw a party. It can be a pregame for some other campus event, or a board game night, or something low-key. But invite a bunch of people from different social circles and have them mix. And everyone is going to want to have a conversation with you; you are the host, after all.
1. Level 4/5 autonomous trucks everywhere. Speed-regulated, will probably have special lanes in freeways to pacify people. Cars will take some more time.
2. Global carbon emissions not reduced, we're all essentially screwed wrt global warming
3. About 50% of the US population is vegan or predominantly vegan
4. Google loses a lot of its sheen, becomes the equivalent of IBM in terms of glory (like air7's prediction)
5. Privacy becomes a major concern in China - young population growing up wants more rights, major anti-censoring/privacy industry