Title: On the Origin of Species.
Question: Who proposed that life is a self-maintaining, infinite cycle?

Title: Sahara.
Question: Where are the Atlas Mountains located?

Title: Catalan language.
Question: Besides Catalan, Alsatian, and Breton, what other patois were banned?

Title: Pain.
Question:
Some people may not report pain because they think it's a sign what is near?