this nutrient-stealing marine worm is the oldest known parasite
- Written by Luke Strotz, Professor, Northwest University, Xi'an

The COVID-19 outbreak has put into stark relief the disruption parasites can cause, both in human society and ecosystems.
Researchers have long sought to better understand the evolutionary importance of parasites, to help lessen their impact.
Although parasites are common in modern ecosystems, we actually know little about...