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.
The World’s Strongest Material is Limpet Teeth
The world's strongest material is no longer spider silk, it's limpet teeth.