He had no choice but to watch the strange activity taking place in the ruins.

Humans, he'd long ago concluded, found pleasure in some very strange activities.

She stays at home with her brother and while their father is away strange activity happens in the house.

There has been a lot of strange activity in the area lately, and this could be part of it.

The most well known account of strange activity documented by security guards came in May 1979.

It came from a small gray cloud that had drifted up to observe the strange activity.

They were days that brought nights of strange activities.

On his way out he notices strange activity in the basement, but ignores it.

Reading whole books is a strange, antiquarian activity in the 21st century.

For a moment, he thought some strange volcanic activity had warmed the cave.