In November 1974, astronomers used the radio telescope at Puerto Rico's Arecibo Observatory to send a hello to the universe.

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

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 no longer spider silk, it's limpet teeth.