Alle episoder

Why does your washing sometimes smell bad? What is the difference between forecast temperature and 'real feel'? Why can't other apes grow long head ha...

Dr Chris answers listener submitted questions including: would it be possible to slingshot continuously around the Earth and Mars? When does our consc...

Do women suffer from flatulence, and what affects your level of flatulence? Does hitting someone on the head actually knock them out? Is being a psych...

Does laying on your left side clean your organs? Are faces the only difference that different populations have, and why do we notice facial difference...

What causes monkeypox? Would an organ donor's DNA be in your body? Why does alcohol abate the symptoms of a hangover? Can you get bird flu from bird p...

Dr Chris Smith answers listener science questions; what factors impact the onset of glycosuria? Might we have contaminated Mars with organisms from Ea...

Are skin tags an indication of diabetes? Why don't cattle flee from fire? Do apples stimulate your appetite? Why are some cats great at hunting, and o...

Dr Chris Smith chats with Relebogile Mabotja and her listeners about their science questions. Today: do older people yawn less frequently? And should ...

This time on Ask!, Dr Chris explains how tree rings helped scientists confirm last summer was the hottest for 2000 years. Also, how were the pyramids ...

Chris Smith covers another cast of interesting queries submitted by listeners. They include: Why do we have accents? Is there such a thing as the "dev...

Dr Chris takes on listener questions: how long can someone survive without food and water? Why are some of us more prone to hangovers? Do gorillas dri...

In this week's selection of science questions, Dr Chris explains the impact of sweetners on the body, what happens when we suffer a stroke, and where ...

Why are viruses so contagious? Are there any treatments for macular degeneration? How are we treating depression with psychedelics? Why do people lose...

Is our perfect total eclipse just a total coincidence? Where do our dreams come from? Can you launch a missile without it being picked up by satellite...

Why did the eclipse move west to east across the Earth? Why are we so interested in nuclear fusion? Could we ever breathe underwater? What is the oppo...

Do animals ever get lost? Do ants count their steps? Could we recreate the greenhouse effect on Mars? Why can you hear some aircraft, but not others? ...

Dr Chris answers more listener submitted questions including, Why is South Africa on the bottom of the world map? Why are countries interested in land...

Chris Smith answers science questions from the public. Does the rate of nail growth differ between men and women? What are the advantages of a nose sw...

Do statins affect your Vitamin D production? Why do we have leap years? Which came first, the chicken or the egg? Could we live on the moon of Titan? ...

Chris Smith answers another sample of enquiries from across the scientific spectrum: What might have caused my beetle infestation? Why do so many cult...

What causes the noise in a lightning strike? How do astronauts' bodies change after a long time in space? Can you die of fright? Are we living in the ...

Why do birds stand on one leg? Which animals can we eat, and which can we not? Does your life flash before your eyes when you die? Does a plug's wirin...

Dr Chris Smith answers listener questions including, how can we communicate science better? How much distance do we travel through space each second? ...

Chris Smith takes on listener questions, including: How far out to sea do seagulls fly? How is the malaria vaccine rollout going? Why does hot weather...

Chris Smith takes on listener submitted questions including, why do people disagree so much on what temperature to set the heating? Where do swallows ...

Why might chilli cause an upset stomach? How does a boomerang work? What's the difference between 50Hz and 60Hz of energy? Why does Saturn have a hexa...

Why kind of gas is in a gas giant planet? Can you do anything about sleepwalking? What causes stutters and speech impediments? Does blowing out birthd...

In the first Ask! of 2024, Dr Chris Smith tackles questions on UV rays, Fahrenheit vs Celsius, whether the Three Gorges Dam could be slowing down the ...

Are some wildfires beneficial? What is the worst case scenario for climate change? What causes lactose intolerance? Does sunscreen cause a vitamin D d...

This week, a Christmas surprise in Dr Chris's tree that he'd rather not have brought home; should I drink water from aircon machines or even vehicle e...