Globally, cerebrovascular accidents, or stroke, are the second leading cause of death and the third leading cause of disability. Seventy percent of strokes, and an even higher proportion of both stroke-related deaths and disability-adjusted life years, occur in low and middle-income countries, with the incidents in these countries more than doubling over the past four decades.

In recent years, the treatments available for people living with HIV (PWH) have advanced to allow people to manage the condition. With established support systems and guidance to prevent the spread of HIV also improving, it is key that PWH are aware of their condition as early as possible in order to improve their prognosis and reduce HIV rates in the wider population.

Is food packaging a blight on our environment, or might it help to save it? Why does the food industry spend less than any other on developing new products? And who really has the power to make change happen on our supermarket shelves? Professor Paul Trott has the answers. After all, as academics around the world will tell you, he wrote the book.

Overfishing, disease, pollution, poor water quality and dredging have changed the face of our undersea landscape, and brought some species close to extinction. Find out why Dr Joanne Preston is re-introducing the native oyster to British waters - and what will happen if we allow this humble mollusc to take back control of our water quality.

Bringing back the native oyster to save our seas