Humans are not changing much as they take to city life. Animals on the other hand are evolving rapidly. Anole lizards in Puerto Rico can walk across concrete because their feet have changed. Charles Darwin believed that evolution took thousands of years. This is not the case.
Showing posts with label feet. Show all posts
Showing posts with label feet. Show all posts
"I am captain of this ship!"
Funny Animal Pictures
Australians Celebrate Thongs
Australians will always turn out when there is something odd going on. Thousands of people flocked to Bondi Beach for Australia Day but it was not just to celebrate the day off. They went because of the importance of thongs in there lives - no, not the ones worn around the waist, those worn on the feet!
A crowd of 500 beach goers grabbed giant inflatable thongs and took to the water in an attempt to break the world record set in 2006. The record was safe, however, well short of the the 863 target. At least everyone had a good time.
Australia day is when you celebrate things Australian and thongs are very popular here. In summertime some people wear nothing but thongs, all the time. They even go shopping in them. They are especially good for a day of fishing at the beach when you can "fling" them off and head into the water, then come back and put them back on again with your hands free.
A crowd of 500 beach goers grabbed giant inflatable thongs and took to the water in an attempt to break the world record set in 2006. The record was safe, however, well short of the the 863 target. At least everyone had a good time.
Australia day is when you celebrate things Australian and thongs are very popular here. In summertime some people wear nothing but thongs, all the time. They even go shopping in them. They are especially good for a day of fishing at the beach when you can "fling" them off and head into the water, then come back and put them back on again with your hands free.
Society
Geckos Cannot "Stick" to Wet Surfaces
Geckos are being studied to find out how they can climb across ceilings without falling off. Their toe pads can support weight equivalent to two people.
Like many animals with the capacity to "stick" to things, the main reason they can hold on is the many tiny hairs on their suckers. A hair is further divided into hundreds of gripping setae. The attraction between molecules in the surface and the millions of setae add up to significant sticking power.
Water is their enemy. If a surface is wet they fall off. Even on a dry surface, when gecko's feet are soaked in water they cannot hold on. Water tends to stop the superhydrophobic attracted between molecules. This is why geckos lose their wonderful climbing ability. In the wild they would be open to attack from predators in wet conditions. Furthermore, the hope of creating a new adhesive based on geckos is dashed.
Like many animals with the capacity to "stick" to things, the main reason they can hold on is the many tiny hairs on their suckers. A hair is further divided into hundreds of gripping setae. The attraction between molecules in the surface and the millions of setae add up to significant sticking power.
Water is their enemy. If a surface is wet they fall off. Even on a dry surface, when gecko's feet are soaked in water they cannot hold on. Water tends to stop the superhydrophobic attracted between molecules. This is why geckos lose their wonderful climbing ability. In the wild they would be open to attack from predators in wet conditions. Furthermore, the hope of creating a new adhesive based on geckos is dashed.
http://www.adventure--australia.blogspot.com/
http://www.tysaustralia.blogspot.com/
http://www.feeds.feedburner.com/AdventureAustralia
http://www.technorati.com/blogs/
http://adventure--australia.blogspot.com
http://www.tysaustralia.blogspot.com/
http://www.feeds.feedburner.com/AdventureAustralia
http://www.technorati.com/blogs/
http://adventure--australia.blogspot.com
Science
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