A pile of manure for fertilizing crops

A History of Human Waste as Fertilizer

In eighteenth century Japan, human excrement played a vital role in agriculture. Can similar solutions help manage waste today?

On Raising the Dead

A biotech company wants to use stem cell therapy to restore neurological function in patients who have been declared braindead.
Limpets on a rock

The World’s Strongest Material is Limpet Teeth

The world's strongest material is no longer spider silk, it's limpet teeth.