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"Three Blind Mice" is an old children’s tune, but a team of scientists have taken it seriously: they discovered a chemical that temporarily restores some vision to blind mice. This could someday allow people with degenerative blindness to see again.

Because the chemical eventually wears off, it may offer a safer alternative to other experimental approaches for restoring sight, such as gene or stem cell therapies, which permanently change the retina.
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Even if you didn’t eat your veggies or drink your milk as a child, your eventual height as an adult is still in your hands.

Most of us "shrink" a bit as we age, due to an increase in body fat and decrease in bone mass. But a decrease in height can be further exacerbated by certain kinds of arthritis, inflammation of spine joints or osteoporosis. Studies have shown that these conditions are associated with lifestyle choices such as diet, exercise and smoking.
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How to stop the illegal poaching that is killing off some horned animals? Make it legal!

In the March 25th edition of the Guardian, Edna Molewa reports that South Africa’s environmental affairs minister if backing a radical proposal to legalize the international trade in rhino horn as a means of shutting down the black market and saving the threatened species. Almost 700 rhinos were killed in South Africa last year.
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Should we get our mercury-amalgam fillings replaced–or would it be easier just to grow new teeth?

A common test used to determine mercury exposure from dental amalgam fillings may significantly overestimate the amount of the toxic metal released from fillings. While scientists agree that dental amalgam fillings slowly release mercury vapor into the mouth, both the amount of mercury released and the question of whether this exposure presents a significant health risk remain controversial.
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