A new antiretroviral drug has been given the thumbs up by the World Health Organisation and is now being introduced into many HIV programmes across the world. One of the factors that influenced the WHO’s decision were the preliminary results from studies that include an ongoing trial in South Africa. Michelle Moorhouse and Willem Daniel Francois Venter set out what the South African trial has found.

The high seas are so far from land that no single state governs what happens there. But these vast and mostly empty places aren’t beyond human influence – nor are their most fearsome inhabitants. The world’s largest sharks stalk the open ocean, but a new study has revealed their habitat is under threat like never before. David Sims explains.

There are laws in Uganda that restrict the amount of force police can use on civilians. But there is also a multiplicity of legislation that empowers the police and other security agencies to carry out arrests as well as to control and disperse crowds. These laws place no limits on the use of force or firearms. Sylvie Namwase writes that despite a key constitutional ruling that limited the police’s power to use unlimited force when dispersing crowds, loopholes still persist within Uganda’s legal framework.