For sale: two blocks of rock salt that weigh a combined 6 tons. A bid of just 2 yen (1.3 U.S. cents) per piece would clinch the deal, but so far nobody is showing any interest. The unusual items ...
"A major problem for animals with salt glands is 'encrustation', where the salt dries and blocks the salt excreting ducts. Modern birds shake their heads to avoid this, while marine iguanas sneeze to ...