Does it all come back to nature? A substance key to making a Covid-19 vaccine is only found in horseshoe crabs. But conservationists are worried declining numbers will threaten ecosystems.
The 450-million-year-old crab saving humanity

Does it all come back to nature? A substance key to making a Covid-19 vaccine is only found in horseshoe crabs. But conservationists are worried declining numbers will threaten ecosystems.