The first year of COVID; the 'molecular messages' sent during exercise; is orthopaedic surgery over prescribed?; and can a combination pill transform how blood pressure is treated?

How did Australia fare in the first year of the pandemic?

What are the 'molecular messages' our body sends during exercise and how can they be used to help treat disease?

Are the most common elective orthopaedic surgeries prescribed always the most effective option?

And can a pill that combines four low-dose medications transform how high blood pressure is treated?