Impenetrable Orange Goo

A new "bullet-busting" shock-absorbent gel is set to save the lives of British soldiers by substantially reinforcing their helmets.
It is hoped that the shock-absorbing substance will soon be fitted onto the inside of soldiers' helmets reducing in half the kinetic energy of a bullet or piece of shrapnel and hopefully making them impenetrable.
The gel, called d3O locks instantly into a solidified form when it is hit at high impact.
story HERE
more info on d3o HERE