The Naked Scientist explains zika virus, airplanes, allergies and voices

702 listeners satisfied their curiosity about the world by throwing science questions on any subject to the doctor and scientist.

Listen to Dr. Chris Smith answering questions from listeners during the Redi Tlhabi show below...

The reason that airoplanes fly forward is because of the way wings work to create lift and birds are gonna be a little bit similar. An airoplane wing and bird's wing work by pushing air in one direction, and if you push air in one direction the air generator force on you in the opposite direction pushing upwards.

Dr Chris Smith, lecturer in virology at Cambridge University, UK

The reason we have allergy is because there are proteins, which are chemicals, in things in the world around us to which we have developed some kind of anti-body (called IGE) response.

Dr Chris Smith, lecturer in virology at Cambridge University, UK

The shape of your mouth and also the shape of your head dictate what frequencies get amplified best. And this is why we all have different sound voices.

Dr Chris Smith, lecturer in virology at Cambridge University, UK

Recommended

by NEWSROOM AI

702 welcomes all comments that are constructive, contribute to discussions in a meaningful manner and take stories forward.

However, we will NOT condone the following:

  • Racism (including offensive comments based on ethnicity and nationality)
  • Sexism
  • Homophobia
  • Religious intolerance
  • Cyber bullying
  • Hate speech
  • Derogatory language
  • Comments inciting violence.

We ask that your comments remain relevant to the articles they appear on and do not include general banter or conversation as this dilutes the effectiveness of the comments section.

We strive to make the 702 community a safe and welcoming space for all.

702 reserves the right to: 1) remove any comments that do not follow the above guidelines; and, 2) ban users who repeatedly infringe the rules.

Should you find any comments upsetting or offensive you can also flag them and we will assess it against our guidelines.

702 is constantly reviewing its comments policy in order to create an environment conducive to constructive conversations.

Read More
Is everything you say prefaced with your social labels? Listeners talk identity

Is everything you say prefaced with your social labels? Listeners talk identity

Can you express a view without announcing yourself as a member of a certain social group first? Eusebius opened a discussion.

[LISTEN] Sanitary towels added to proposed list of VAT zero-rated products

[LISTEN] Sanitary towels added to proposed list of VAT zero-rated products

An economist at Argon Asset Management Thabi Leoka explains how they came up with the proposed list for zero-rated products.

Ramaphosa has three months to hire new NPA boss, Abrahams' position invalid

Ramaphosa has three months to hire new NPA boss, Abrahams' position invalid

The ConCourt has confirmed that the appointment of Advocate Shaun Abrahams as prosecutions boss is constitutionally invalid.

Happiness and fulfillment aren't the same. A clinical psychologist enlightens

Happiness and fulfillment aren't the same. A clinical psychologist enlightens

Happiness is often linked to hedonism and can be a fleeting emotional state, says clinical psychologist Khosi Jiyane.

Debating Mbeki's economic legacy

Debating Mbeki's economic legacy

Pundits discuss how South Africa’s economic trajectory performed under former president Thabo Mbeki's administration.

 Multi-racial relationships in South Africa still draw attention say couples

Multi-racial relationships in South Africa still draw attention say couples

Couples in interracial relationships sit down to discuss the difficulties of being in such relationships.

Popular articles
The UAE is pumping billions into the Horn of Africa

The UAE is pumping billions into the Horn of Africa

The Money Show's Bruce Whitfield interviews Africa correspondent Lee Kasumba

Bob Martin’s new adverts celebrate how good pets are for humans

Bob Martin’s new adverts celebrate how good pets are for humans

Bruce Whitfield asks branding and advertising expert Andy Rice to critique the week’s advertising “heroes” and “zeroes”.

'Minnie understood he might become a target'

'Minnie understood he might become a target'

Marianne Thamm wrote the forward to 'The Lost Boys of Bird Island' and worked with Mark Minnie in editing the controversial book.

[WATCH] Dad dresses up as a mom so his sons don't feel left out on Mother's Day

[WATCH] Dad dresses up as a mom so his sons don't feel left out on Mother's Day

Khabazela shares Facebook posts, YouTube videos that have gone viral including one with the smartest dogs.

[LISTEN] Is your phone listening in on your conversations?

[LISTEN] Is your phone listening in on your conversations?

MD at World Wide Worx Arthur Goldstuck explains how your phone may record your voice conversations.

JHB CBD muggings - Where are the police ?

JHB CBD muggings - Where are the police ?

City of Joburg mayor Herman Mashaba says undocumented people living in the city make it difficult to combat crime.

'Black Tax'... working hard, earning well, but struggling financially

'Black Tax'... working hard, earning well, but struggling financially

Young(ish) South Africans tell stories of the mixed emotions they feel when supporting family members, and tips from an advisor.

Castro bodyguard shares tales of dictator’s double life and breath-taking wealth

Castro bodyguard shares tales of dictator’s double life and breath-taking wealth

Juan Sanchez shares stories of Fidel Castro that’ll make you re-examine everything you thought you knew about the Cuban dictator.