Why are the stars small? ? how to you know? thx

What events caused the united states to intervene in southwest asia?

If scientists only detect p waves in a certain layer of earths interior what does that tell us?

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)