Research into the effects of global warming suggests that the size of fish around the world could shrink dramatically over the next few decades. Warmer ocean temperatures could lead to hundreds of types of fish losing up to 1/4 of their body weight. Here's Matt McGrath.

Although projections of global temperature rises show relatively small changes at the bottom of the oceans, the resulting impacts on fish body size are unexpectedly large, according to this research. As ocean temperature increases, so do the body temperatures and metabolic rates of the fish. This means they use more oxygen to stay alive. And according to the researchers, they have less available for growth.

A third opposition activist has died in Venezuela following a shooting on Saturday one week before the closest-fought presidential election in a decade. Speaking at a rally in the capital Caracas, the opposition candidate Henrique Capriles demanded justices and called on his supporters to defeat violence. Venezuelan authorities say they've arrested a suspect in connection with the attack in Barinas, the home state of President Hugo Chavez.

The Ryder Cup golf tournament between Europe and United States is heading for a close finish after the European team mounted a spirited fight back on the final day. The holders, Europe, drew level by winning five of the first six matches at the Medinah Country Club outside Chicago. The world No. 1 Rory McIlroy won his match after arriving at the course only ten minutes before he was due to tee off after an apparent mix-up over times zones.