Safety fears and conspiracy theories about the feed additive Bovaer have been circulating on social media, but the maker and Australia's peak livestock body are defending its use.

The funding is aimed at increasing the domestic refining of critical minerals, which are key to technologies used in the transition to green energy.

An upper house committee voted to refer its report to the corruption watchdog because of "unanswered questions" about the premier's involvement in the Rosehill Racecourse proposal.

After months of saving, households are starting to feel confident enough to spend. Some economists say it is an early indication the stage 3 tax cuts are finally having an impact.

Authorities are investigating after a 29-year-old man was killed at a mineral exploration site in WA's remote northern Goldfields.