Statistics show that 95% of the population at least once in their lives (especially at young age) will sense that what is currently observed has been seen already, experienced somewhere. The biggest problem is that déjà vu lasts only a few seconds and can not possibly be revisited in a laboratory and experimentally studied. Regardless of the very rugged standards that scientists have, there are theories that can explain what's going on with our brains in time to link them with anything experienced in the past.
When your neighbor loses his job, it’s a recession. When you lose your job, it’s a depression. This is how some humorous economists have described the financial crisis that hit the globe almost a decade ago. But the joke might not be so funny to millions of young Europeans who, due to the crisis, have been unemployed for years and have few prospects of finding decent jobs soon.
Scientists are always searching for a discovery that will provide a quick and easy way to increase intelligence. That music has an effect on systemic memory and learning has been known since the time of Plato, but how and why does his happen?