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Why were Red M&Ms eliminated? Should I be concerned?

20 Mar 2017

聽Much to the public鈥檚 dismay, the Mars and Murray Company stopped production of red M&Ms because of a health scare concerning Red Dye Number 2, which at the time was the most common red food...

Refrigerators and Climate Change

20 Mar 2017

The walls of refrigerators have to be heavily insulated in order to maintain efficient cooling. Polyurethane foam insulation has been the classic material used for this purpose and guess what it...

Is it true that garlic in China is grown in human feces and watered with urine?

20 Mar 2017

It is possible that sewage is used as fertilizer, as it is in many parts of the world although there is no evidence that garlic in China is fertilized in this fashion. In any case, there is no...

Beets and Urine

20 Mar 2017

After eating beets. The colour of beetroot is due to a family of compounds known collectively as betacyanins. Ingestion of beets can result in a bright red discolouration of the urine, and quite a...

Is there a risk of heart attack for women taking calcium supplements?

20 Mar 2017

The calcium issue was raised by Dr Ian Reid of New Zealand. He and his colleagues re-analyzed data from the Women Health Initiative (WHI) which looked at calcium and vitamin D supplements.聽聽The...

Salt is used to melt ice, but it is also used to make ice cream. Why?

20 Mar 2017

Why is it that in hot countries we put salt on ice in the ice cream makers to keep the ice from melting, while in cold countries we put salt on ice to melt it? In both cases, the answer is based on...

What is saltpeter used for and is it true it reduces certain 鈥渃arnal urges?鈥

20 Mar 2017

The second part of the question is easy to answer.聽 鈥淪altpetre,鈥 (the term refers either to potassium or sodium nitrate) has no effect on carnal urges.聽 The story that this chemical was put into...

Plastic Wine Bottles?

20 Mar 2017

While PET has a very low permeability when it comes to carbon dioxide, it readily allows oxygen to pass through. And oxygen is the enemy of wine! When we talk about storing soft drinks,...

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