<story><title>Super-hard metal &apos;four times tougher than titanium&apos;</title><url>http://www.bbc.com/news/science-environment-36855705</url></story><parent_chain><item><author>Aelinsaar</author><text>Your own body basically goes through a skeleton every 7 years, although it&amp;#x27;s a gradual procedure of course. Your bones are constantly being eaten away, and replaced as part of their maintenance. It&amp;#x27;s truly amazing, but the secret is definitely, &amp;quot;We can rebuild it&amp;quot; not &amp;quot;Unbreakable&amp;quot;.</text></item><item><author>andyidsinga</author><text>&amp;quot;Conventional knee and hip implants have to be replaced after about 10 years due to wear and tear.&amp;quot;&lt;p&gt;this is really amazing to me! you put metallic, designed-to-last object inside an organic blend of tissue and bone and human activity and in 10 years its worn out. So much opportunity in the area!&lt;p&gt;Along the same lines, interesting how delicate our bodies are in the short term but rather durable in the long term.</text></item></parent_chain><comment><author>aluhut</author><text>We should adjust our justice systems to this cycle. You can sit in jail for max 7years. After that you are considered a different person. The justice apparatus needs to use that 7 years to form this new person in a way that it can behave according to the outside system.</text></comment>
<story><title>Super-hard metal &apos;four times tougher than titanium&apos;</title><url>http://www.bbc.com/news/science-environment-36855705</url></story><parent_chain><item><author>Aelinsaar</author><text>Your own body basically goes through a skeleton every 7 years, although it&amp;#x27;s a gradual procedure of course. Your bones are constantly being eaten away, and replaced as part of their maintenance. It&amp;#x27;s truly amazing, but the secret is definitely, &amp;quot;We can rebuild it&amp;quot; not &amp;quot;Unbreakable&amp;quot;.</text></item><item><author>andyidsinga</author><text>&amp;quot;Conventional knee and hip implants have to be replaced after about 10 years due to wear and tear.&amp;quot;&lt;p&gt;this is really amazing to me! you put metallic, designed-to-last object inside an organic blend of tissue and bone and human activity and in 10 years its worn out. So much opportunity in the area!&lt;p&gt;Along the same lines, interesting how delicate our bodies are in the short term but rather durable in the long term.</text></item></parent_chain><comment><author>dghughes</author><text> I thought that&amp;#x27;s why coral was used for bone implants it&amp;#x27;s first shaped like the part needed then once implanted your own bone cells gradually take over.&lt;p&gt;Maybe it was just a trial I saw to see if it worked or maybe it can only be used for small patches not entire sections of bone like a femur or hip joint.</text></comment>