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Should I wear a mask on public transport?

Masks protect you from infection and protect others from getting sick. But authorities are leaving it up to individuals to decide if they want to wear masks on the bus or train. Here’s how to decide.
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Curious Kids: why do we burp?

Burping is a normal way for the body to release swallowed air, and often happens after eating or drinking fizzy drinks!
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New Zealand hits a 95% chance of eliminating coronavirus – but we predict new cases will emerge

There’s now a 95% chance COVID-19 has been eliminated in NZ, according to our modelling. But as NZ prepares to remove limits on large gatherings, it increases the risk of a very large new outbreak.
Ryan Pierse/AAP

Why does crowd noise matter?

Why are sport broadcasters using fake crowd noise? It might be because crowd noise can help us bond with our tribe and acts as a psychological cue for when to pay attention.