California authority have warned that there is a possibility of the city to be hit by another or even more powerful earthquake within days after southern California was rocked by its worst tremor in 20 years on Thursday, experts believe.

Geologists say yesterday’s 6.4-magnitude quake is likely to produce a forceful 5.5-strength aftershock and a series of smaller tremors – and could even prompt a larger one.

In addition, officials admitted that a new Los Angeles earthquake warning app had not sent out a public alert despite the most powerful Southern California quake since 1999.

Watch video here.....https://janefblog.com/6822-2experts-warns-california-of-upcoming-bigger-quake-within-days-video/

It is called plate tectonics. It is a scientific law which explain how and why the Earth crust moves. It explains when all the continents are in their place today and their possible positions in the future. It gives insights to why there are some specific mineral resources in one place and where such don't exist in other places.
As the North America is moving apart due to tectonism, East Africa is also drifting apart (Around Kenya).
Although this may look dangerous, it is actually more beneficial to the world economy than it seems.