Naked Scientists Ask The Naked Scientists SA

Why don't Animals Crossbreed?

Loading player...
Can we eliminate flies and mosquitoes from our ecosystem and live in peace? When will the universe end? Do eggs with double yolks mean that two twins would have been born? Why don't animals such as lions and zebras cross-breed? Why is it best for women to have babies when they are younger? Does the direction that the water goes down a plug-hole change if you are in the Northern or Southern hemisphere? Is it possible to overcome a fear? Plus, news of a new discovery that bugs in your gut may be able to keep you healthier at old age. Chris Smith answers your questions with Eusebius McKaiser on South Africa's Talk Radio 702...
24 Aug 2017 English United Kingdom Science

Other recent episodes

Can our eyes pop out when we sneeze?

This week, Chris Smith and Clarence Ford tackle the big science questions of the week, including how to perform a circumcision safely; can our eyes pop out when we sneeze; how do general anaesthetics work and do we understand consciousness; is violence inherent to society; do antibiotics kill probiotics; and…
5 Dec 21 min

Why do dogs make a beeline for underwear and smelly socks?

Why do dogs make a beeline for underwear and smelly socks? Also, do we really get taller at night, why do some colours reflect and others absorb light, does our skin get thinner as we age, and what's the basis of lisps and accents? Dr Chris Smith and Amy Maciver…
28 Nov 17 min

Are zebras black with white stripes?

Are any people particularly susceptible to alopecia-linked hair loss? Also, what causes eczema and why does it keep recurring, why are the progeny of different species infertile, why does hair go grey but not always symmetrically, and Is asthma a risk factor for bronchitis? Plus, are zebras actually black with…
20 Nov 17 min

Will we find a cure for diabetes?

In Ask! the Naked Scientists, Dr Chris Smith answers listeners' medical questions. This time, what causes a black eye? How can we alleviate the pain from a trapped nerve? How can you best stop severe bleeding? Why is sickle cell anaemia more common in Africa? Like this podcast? Please help…
13 Nov 21 min

Is an elephant really related to a hyrax?

Is an elephant really a close relative of a hyrax? What are blood groups? Is there really such a thing as a selfish gene? How did males and females evolve? What makes us feel sleepy? And how can chickenpox be lethal? Join Dr Chris and Clarence Ford as we ask…
7 Nov 21 min
All episodes