This example illustrates that backward waves are ubiquitous in the context of metals. For surface-plasmon waves on a metal–dielectric interface, however, the electromagnetic wave is backward ...

That "backward-traveling-wave" means that because of one driver's inattention, we all pay for it miles behind. Finally, there's an explanation for those wasted hours we spent on the MassPike today ...

The same storm that destroyed the Santa Cruz wharf may have also created the largest wave ever surfed — bringing the record to California.