IndigoChild5559
Loving God and my neighbor as myself.
I think your point about science making the world smaller is a great point.The argument would be that:
1) science has enabled technology, in transport and communication (cheap jet travel, phone, TV, internet), which has made people far better informed about one another's culture and conditions than in previous eras, and
2) science has dispelled various myths about race that divided us and highlighted common issues for humanity (climate change, pollution, spread of diseases etc) which can be tackled together.
I think we do tend to take a lot of this for granted and have to make an effort to put ourselves in the shoes of someone in, say the c.18th, in order to recognise the progress that has been made.
Science doesn't do a good job of overcoming biological predispositions. Human beings have an instinct to divide the world into the in group and out group. This can be race, religion, politics, or what end we break our egg. It's not going to go away simply because of scientific discoveries.
I agree that common fears draw humanity together.
None of these things does away with our baser nature.