Drug consumption on the island is not a recent phenomenon.
It is only a recent phenomenon over the last few years.
Looking back through the historical record, the top status for Jack as a male given name is a recent phenomenon.
The use of drugs to enhance performance is not a recent phenomenon.
The rock star with hundreds of millions in the bank is quite a recent phenomenon.
The economic decline of the cities is by no means a recent phenomenon.
"The idea of art separate from life is a recent phenomenon."
Although they are not a recent phenomenon, it does seem to be an increasing problem.
It's not as if this is a completely recent phenomenon and they were caught out of the blue.
The process of evaluation is considered to be a relatively recent phenomenon.