The US government is considering seeking the break-up of the world's biggest search engine, Google, which it accuses of causing "pernicious harms" to Americans.

The Department of Justice (DOJ) has been considering so-called remedies since a landmark court ruling in August which found Google illegally crushed its competition in online search.

If the DOJ pushes ahead with the proposed remedies - and they are accepted by the judge in the case - it would represent arguably the biggest regulatory intervention in the history of big tech.

Google has pushed back hard against the proposals, describing them as "radical" and "sweeping" and claiming they "risk hurting consumers, businesses, and developers."