Ask the Naked Scientists ENHANCED PODCAST

Does holding a car remote to your head make it work better? Why does a boat float? Are triple rainbows real? What's a near-death experience? This week we also look at a new scientific study into why - and when - breast milk transmits HIV to a baby...

Naked Scientists team, Ben Valsler, Chris Smith and Ginny Smith joined the 702 crew and a studio audience live in Johannesburg to talk science, build vacuum bazookas and challenge listeners' mathematical minds...

Do satellites collide? Can albinism be diagnosed on a scan? What causes the timing of the equinox to vary? Do bullets fired in the air still kill people? Can we make a human from just a genetic code? Why doesn't glue stick to the container? What's left underground once oil has been removed? And why can't we tickle ourselves? Join Dr Chris for another round up of the best science questions from South Africa.

Who was John Snow? Why do things shrink in the wash? How does carbon dating work? Is intelligence down to mitochondria? Why does the banner also bank behind a banking aircraft? And how does the human body develop in utero? Dr Chris answers more top science questions from South Africa...

Does a cloudy day aggravate arthritis? Was the biblical flood real? How does a gastric bypass work? Will a knife in water go blunt? Where do the skeletons on sunken ships go? Why do cats have an extra fold of skin in their ears? And why transmit electricity at high voltage? Dr Chris joins Redi Thlabi for thirty minutes of quickfire Q and A...

How did horse meat end up in the food chain? Is baking foil bad for you? How big are viruses? How are urine and sweat produced? How do hydrogen vehicles work? And how do we measure the height of things above sea level? Join Chris Smith for this week's crop of top questions from Talk Radio 702, South Africa.

Why do ovaries run out of eggs and what affects egg quality? Why does diesel smell nice but burning engine oil is unpleasant? Do genes from genetically modified organisms get into eggs and sperm? Does lead affect behaviour? What causes motion sickness? Join Dr Chris for another run of science questions from South Africa...

How does alcohol cause liver cirrhosis? Can we make matter massless by removing Higgs particles? How did spiders evolve web-making skills? What is insulin resistance? What does fluoride do? And do scars sustained by adults manifest in their offspring? This week Dr Chris takes on more questions from Talk Radio 702 South Africa.

Are helium-filled balloons less likely to pop? How does a cordless toothbrush charge? Is there much mercury in compact fluorescent bulbs? Why do tired toddlers rub their eyes? Is lactose intolerance more common than it once was? And is it possible to trigger earthquakes artificially? Dr Chris answers this week's burning questions on Talk Radio 702, South Africa...

Ask the Naked Scientists 13.01.25 - How does blood doping work?

Ask the Naked Scientists 12.12.21 - Making more twins

Ask the Naked Scientists 12.12.07 - Can genes re-write their own code?

Ask the Naked Scientists 12.11.30 - Do tyres on the roof repel lightning?

Ask the Naked Scientists 12.11.09 - Do Blood Donors Live Longer?

Ask the Naked Scientists 12.11.02 - What causes hurricanes?