Posts tagged ‘breath’

Dog’s Mouths Are Not Cleaner Than Human’s

This probably shouldn’t be a secret. If you think about the things that dogs lick and humans don’t, then this should be pretty obvious. But, the myth that dog’s mouths are cleaner than human’s is perpetually propagated.

There is an old tale that you should let a dog lick your wounds to speed healing. The wounds may actually heal faster; that’s because the licking will stimulate circulation and clear away dead tissue, but it’s not because their saliva is cleaner than ours.

Some say that dog’s saliva is more acidic than humans so they break down bacteria better. Others look at the fact that dogs rarely get cavities or gum disease as proof.

The fact is, dogs have a similar amount of oral bacteria to humans. But, the types of oral bacteria varies between dogs and humans.

That’s why dogs rarely get cavities or gum disease, the types of bacteria that cause these problems are only found in about 5% of dogs. In fact, viruses and bacteria that affect humans usually don’t bother dogs and vice versa. For that reason, you may actually have a higher risk of becoming sick from kissing a human than kissing a dog. But, that doesn’t mean their mouths are cleaner.

Broken Secrets | By: Chad Upton

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Sources: A Moment of Science, ABC, Life’s Little Mysteries

June 28, 2010 at 5:00 am 14 comments

The Three Plants That Will Improve Your Home Air

Spring is here and the garden centers are open. It’s time to get some plants, especially for inside your home.

Indoor plants are really important. There are chemicals in and on almost everything you buy. If your air is not replenished with fresh air, it can be mildly toxic. But, with the right mix of plants, your air can be cleaned and oxygenated around the clock.

With as little as these three plants, you can have this perfect mix:

  • Areca palm – (Chrysalidocarpus lutescens)
  • Snake plant or mother-in-law’s tongue – (Sansevieria trifasciata ‘Laurentii’)
  • Golden pothos or Devil’s ivy – (Scindapsus aures or Epipremnum aureum)

The “Areca Palm” removes CO2 and converts it into oxygen during the day. The “Snake Plant” converts CO2 into oxygen at night. The “Golden pothos” removes formaldehyde and other chemicals from your air.

Using these plants has shown significant oxygen level improvements in real world situations. Having these plants in your home can increase blood oxygen levels by 1% in 10 hours. They can reduce headaches, eye irritation, asthma and other respiratory problems.

These three plants are just a few of the many plants that are considered Air Filtering Plants. NASA has identified a number of similar plants in it’s Clean Air Study — an attempt to understand natural ways to purify air in closed spaces, on earth and beyond.

Read about the other plants or watch Kamal Meattle’s talk at TED for more info.

Broken Secrets | By: Chad Upton

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Photo: Leto A (cc)

Sources: TED, Air Filtering Plants

June 4, 2010 at 5:00 am 64 comments


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