Menu Close
Poisonous or edible? Ekaterina Morozova/iStock via Getty Images Plus

Why are some mushrooms poisonous?

Poison can be a deadly defense that helps a mushroom make sure its spores are spread to new places to grow into baby mushrooms.
A security guard leads reporters away from the Wuhan Institute of Virology after a WHO team arrived for a field visit in Wuhan, Hubei province of China, Feb. 3, 2021. The team came to no conclusions about the origins of the pandemic. (AP Photo/Ng Han Guan)

Origins of SARS-CoV-2: Why the lab-leak idea is being considered again

Gain-of-function studies make a natural virus more dangerous or transmissible to humans. Could the Wuhan Institute of Virology be the source of SARS-CoV-2?

Vaccine rollout

More