Tropical Storm Erika causes destruction on the Caribbean island of Dominica, where at least 12 people were killed.
Brazil enters recession, as official figures show the country's economy contracted by 1.9% between April and June, compared with the previous three months.
Germany's Erik Heil says he has contracted an infection after competing in waters which will host sailing at the Rio Olympics.
South American fossil throws new light on evolution of lizards
Safety concerns over Panama Canal expansion
How 3D printing helped a trafficked toucan
On 29th August 1970, 30,000 Mexican-Americans marched against the Vietnam war.
The challenges of dealing with Brazilianisms
The refugee crisis brewing on the Haitian border
Did Martin Luther King achieve his life's dream?
What can we learn from graffiti?