Nine To Noon

Science correspondent Allan Blackman takes this Guy Fawkes opportunity to talk about the chemistry behind fireworks? What makes them go bang and where do the colours come from? Could sharper knives be the secret to stopping onion tears in the kitchen? And America's Health Secretary RFK wants to put saturated fat back on the menu, but what does science have to say about that? Allan Blackman is a Professor of Chemistry, School of Science, Auckland University of Technology.

A new book unpacks how 850 of our placenames came about.

Ian discusses a disappointing social housing announcement and more.

Lucy Black reviews Whenua: Maori Purakau of Aotearoa by Isobel Joy Te Aho-White, published by Hachette Aotearoa New Zealand.

Nearly three quarters of 2 to 14-year-old children are watching large amounts of YouTube content every day, often with minimal parental oversight. New research by Verian, commissioned by NZ on Air, has found the online streaming website dominated viewing, with 69 per cent of children aged 2 to 14 watching daily. Of the 12 to 14-year-olds watching YouTube, nearly 40 per cent had no parental controls at all. The data comes from an online survey answered by 1000 caregivers and children. The research also found local content is being crowded out by overseas content. In response, NZ on Air is today launching two new YouTube channels called KIDOGO and KIDOGO JUNIOR, which will feature local content it has funded. Kathryn speaks with Amie Mills, head of funding at NZ on Air.

Kim Logan is a climber and mountaineer who has summited some of the tallest and most difficult peaks in the world including Mt Everest and K2.

Australia correspondent Karen Middleton joins Kathryn to talk about what's happening across the ditch.

70% of material that ends up in landfills comes from construction and demolition and most of that is soil.

Half a billion dollars of investments, from KiwiSaver and other funds out of New Zealand, are going into Government bonds of countries with poor human rights records. That is according to a new report published by Motu Research this morning. Researchers there used the Human Rights Measurement Initiative, which ranks countries based on economic, civil and political rights residents have and portfolio data from KiwiSaver and other retail funds - to identify how much money New Zealanders were investing in sovereign bonds of so-called 'high alert' countries. These countries include China, Israel, Saudi Arabia and Qatar because of their low scores in safety from the state, civic freedoms and rights to things like education, food, health and housing. Lead author and economist at Motu Research Anne-Marie Brook says ethical investing has typically had minimal human rights data and this is the first comprehensive look at how much New Zealand investment is going into sovereign bonds of countries with dubious human rights' records.

FENZ says there have been as many as 30 fireworks-caused fires throughout the country since sales began on Sunday. Incidents include a house fire overnight in the south of Auckland; and on Monday night firefighters and police being shot at with fireworks in Dunedin's student area. FENZ says conditions in a lot of the country are windy and dry, meaning fires could spread quickly. It is warning people to check conditions before lighting up - and for those in rural areas to ensure burnouts are totally out. Adrian Nacey is a national manager at FENZ. [picture id="4JYKSTL_FENZ_FIREWORKS_jpg" crop="16x10" layout="full"]