BBC Online
IS weakening but still a threat: Obama
US President Barack Obama says there have been gains against so-called Islamic State in Iraq and Syria but warned the group still poses a threat.
August 5, 2016
Zika vaccines show early promise
Three different ways of designing a vaccine have been shown to be completely protective against the Zika virus.
August 5, 2016
IS weakening but still a threat: Obama
US President Barack Obama says there have been gains against so-called Islamic State in Iraq and Syria but warned the group still poses a threat.