The upsurge in pet products has made it easier than ever to reveal how much we love our four-legged friends, even to the point of wearing clothes sporting their furry faces.
It is said to have begun in convents and it had its strongest upsurge in the Great Irish Famine of 1846, where its sales helped alleviate poverty woes.
The current upsurge of interest in college hockey can be easily attributed to the fact that more than 25% of current NHL players were on college teams.
Rag rugs experienced an upsurge in popularity during the Great Depression and again during recent years with the green movement and the recession.
Recently there has been an upsurge of dangerous aliens landing on Earth with evil intentions.