The ancient monument is being referred to as a roundel—the name archaeologists have given to large circular structures of a similar age that have been found scattered across Central Europe.

Archaeologists digging near Prague have discovered the remains of a Stone Age structure that's older than Stonehenge and even the Egyptian pyramids: an enigmatic complex known as a roundel.

Launched in 2016, Roundel says it boosts customers’ visibility by using consumer data from more than 165 million people to run ads on the platforms of more than 150 publishing partners.

A mysterious, newly discovered stone roundel in Prague is older than Stonehenge and the Egyptian pyramids, built some 7,000 years ago during the Stone Age. Its purpose remains unknown.

Target launched a new program for brands to buy search ads. It's the latest sign of retailers taking significant portions of their ad businesses in-house. Target's new program does not yet include ...