What is the flower that stands for: incorruptible?

Questions

What was the name given to the anti-communist hysteria in America from 1947 - 1954?

Which pop stars first major screen role was as an alien called Thomas Jerome Newton?

What was banned in England in 1665 in an attempt to stop the spread of the plague?

Which metal is always present in an amalgam?

Whose bones did pop star Michael Jackson offer the London Medical College 1 million dollars for?