Djokovic is out of the Australian Open after retiring from his semi-final, with Zverev through to face Sinner on Sunday ...

Without adequate blood flow to the heart muscle, the tissue does not receive enough ... diagnose the condition and guide you to the right type of treatment. A healthcare provider will diagnose arm ...

(A) A summary plot illustrating the elastic modulus range of the artificial muscle compared to representative ... The material also demonstrates remarkable tear and puncture resistance.