A complete picture of the areas that the immune system attacks to cause type 1 diabetes has finally been revealed by scientists.

A week after Ecuador's devastating earthquake, President Rafael Correa has said the number of fatalities has risen to 646.

The French government is "completely committed" to constructing the Hinkley Point nuclear power plant, the French economy minister has told the BBC.

At least 272 people have been confirmed dead and more than 1,500 people injured after Ecuador was hit by its most powerful earthquake in decades.

More than 150 countries have begun switching to a different polio vaccine - an important milestone towards polio eradication, health campaigners say.

Cancer scientists have genetically modified the immune system to help it attack tumours in mice.

There are estimated to be 2,400 one-horned rhinos, out of a global population of 3,300, at the park in Assam

A heatwave across most of India has led to a hotter than usual summer in much of the country. Broadcast meteorologist Peter Gibbs describes the situation.

An outbreak of yellow fever has killed 21 people in the Democratic Republic of Congo, the World Health Organization (WHO) says, linking some cases to an outbreak in neighbouring Angola.

Survivors of Ebola are holding protests across Sierra Leone over what they believe is a lack of government care.