Australian scientists have developed genetically modified flies and fish capable of absorbing and neutralizing toxic methylmercury. These organisms break down the mercury-containing compound into a safe form that evaporates from their bodies.
Methylmercury accumulates in bodies of water and marine life, then enters the human body, where it causes serious nervous system disorders. The main sources of pollution are metallurgy, gold mining and coal burning—about 2,000 tonnes of mercury enter the atmosphere each year.
This biotechnological method could help clean up the environment, but an open question remains: should emissions be reduced first, rather than shifting responsibility onto modified organisms?
