Brian Cox argued with Australian senator Malcolm Roberts on TV show Q&A about climate change, accusing NASA and other organisations of "corrupting" temperature data.

After a recent second campylobacter issue in Havelock North, it turns out that the Hastings water supply is not treated with chlorine to kill bacteria.

I totally agree that people should not be allowed to talk about treating health conditions if they have not received approval, and hopefully the upcoming Natural Health Products bill will be a step in the right direction in New Zealand for ensuring claims can't be made without good evidence.

Superfoods are foods that are touted as having high levels of one or more nutrients, with claims made that these nutrients can heal the body. These superfoods, such as kale, goji berries and chia seeds, are often sold at very high prices.

There were several witch doctors in Auckland last year, and they eventually left the country after efforts were made to clamp down on them, including some successful ASA complaints.