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Evolution and Natural Selection
28 Jun 2008
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5th Jul 2009

Why Does Toothpaste Make Food Taste Funny?


Kat Arney

Chris Smith

Ben Valsler
Orange fireball teaser

This week, we're taking on your science brainteasers!  We find out why toothpaste ruins other flavours, whether humans have a mating season and why food goes in multicoloured, but comes out brown...  Plus, fighting Fido's fleas with fungus, stressed men take more risks, and predicting if hepatitis B will lead to liver cancer.  In Kitchen Science, we make a fruity fireball with orange peel.

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News

(c) US Federal Government

No fleas on me

A chemical made by a fungus might hold the key to a new anti-flea treatment for dogs and cats. Writing in the Journal of Medicinal Chemistry, Merck scientist Peter Meinke and his colleagues explain how they have developed an orally-active anti-flea and tick drug based on a chemical called nodu...

(c) Complete fanatic

Stressed Men Take More Risks

Stressed men take more risks, while stressed women play it safe, according to research published in the Journal PLoS One this week. Nichole Lighthall, from the University of Southern California Davis School of Gerontology, asked volunteers to play a computer game designed to measure risk taking, ca...

(c) David Shankbone

A rush of blood to the head

We often talk about angry people as having had a metaphorical sudden rush of blood to the head, but new research from scientists in the US, published in the journal Cardiovascular Ultrasound suggests that it might actually be true. This is research by Tasneem Naqvi and Hahn Hyuhn, who were using ul...

(c) Mytho88

Electric Cars too Quiet

Electric cars have been accused of being too quiet, and posing a risk to the vision impaired, and prompting the Japanese government to review whether to add a noise making device. Hybrid vehicles make very little noise when running on the batteries, and have become the country’s top selling cars in...

Liver cancer gene link

There are some interesting new results out this week about the link between Hepatitis B infection and cancer, published in the Journal of the National Cancer Institute. Hepatitis B infection is relatively rare in the West, but it's a big problem in sub-Saharan Africa and Asia. And the bad thing ab...


Interviews

The World Conference of Science Journalists

Earlier this week, it was the World Conference of Science Journalists. Nearly a thousand science writers and broadcasters from all over the world got together in Westminster, not at the houses of Westminster, but down just the road from there, to help each other out and to share some ideas and here...

(c) Michel Deschênes

Maker Faire Africa

Back in April, our technology correspondent Chris Vallance reported on the UK’s first Maker Faire. It’s now gone global, and so he’s back to tell us more...


Kitchen Science

(c) Dave Ansell

Fruit Fireballs

You may think that oranges seem are a fairly boring sort of fruit. Discover their more exciting side in this simple experiment.


Questions

Why does brushing your teeth alter the flavor of substances afterwards?


Identical Twins have Identical babies?


Do men take greater risks than women when playing tennis?


Why does soap stop mirrors from fogging?


How do clothes dry?


Why don’t humans have a mating season like other animals?


Where does water in a hose pipe go?


Is mixed venom more deadly?


Do copper cures and magnetic medicine work?


Why is food multicoloured, but poo brown?


When we sneeze, why does it come in twos and threes?



QotW

(c) Centers for Disease Control and Prevention

Why don't we sneeze when we sleep?

Why don't we sneeze when we sleep?


April Russell  asked the Naked Scientists:

I was listening to the show from July 7, and my immediate reaction was how annoying it wou...
- April Russell - 11th Jul 09
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