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A letter from over 200 scientists to the World Health Organization asks for further investigation into how the virus spreads. WHO responded at a press conference on Tuesday.
There are various studies looking at changes to the virus genome — and the possible impact on how the virus affects humans. Here’s what we know (and don’t yet know) about mutations.
By breeding and migrating earlier, some birds are adapting to climate change. But it’s probably not happening fast enough for some species to survive, according to new research.