In this edition of Tech It Out, we go on with our "Science Behind Virus" series, telling you how scientists test for the novel coronavirus.

In Science Saturday, we review major science news of the past two weeks that made headlines around the world, including world's first lung transplant operation on COVID-19 patient in China; China's lunar rover unveils underground structure on moon's far side; the discovery of dog nose's sensing of weak thermal radiation; and the threat of erosion that the world's sandy beaches are facing.