Microbiologists Patrick Moreira and Purificación López-García, together with virologists Arturo Ludmir and Lynn Enquist, are at the center of a sharp debate over whether viruses count as living ...

At the microscopic edge of biology, researchers have uncovered an organism so stripped down that it forces a rethink of what it means to be alive. The discovery hints at a form of existence that is ...

In simple terms: a virus is a tiny package of genetic instructions with a delivery system. Outside a cell it is metabolically inert. Once inside a susceptible cell, it redirects the cell's machinery ...