Good:Americans may hold a key to gas prices
With the ongoing problem of high gas prices the US faces, this pulls readers in because they are interested in what this news in gas means. It also is a play on driving, because they hold keys to start cars and they also hold a key to gas prices as said in the headline.
Bad: Construction Worker Rescued After Fall
This headline doesn't quite explain the severity of the fall and might have some readers confused. If the man just fell into a shallow pothole did he really need rescuing? The description of the accident should be more clear.