Venezuela's most senior political leaders are in Cuba to visit President Hugo Chavez who still in a serious condition after his forth cancer operation a month ago. The vice-president and a speaker of the National Assembly had met in Havana with the Cuban leader Raul Castro.

Scientists researching some of the earliest tetrapod creatures to walk the earth have made a startling discovery that our previous understanding of their anatomy was back-to-front. Here is our science reporter Rebecca Morelle.

These primitive four-legged animals were the first creatures to hold themselves out of the oceans, paving the way for all future life on land. Studying their anatomy is vital to understanding these, but it seems we've had it all wrong. Scientists created a detailed computer reconstruction and they discovered their backbones were back-to-front from what we understood, parts of the spine thought face the fronts of the animal in fact face the back and vice versa. The findings gave us more clues about how the breeds start base physically made the transition from water to land.

Stars of film and television will be walking the red carpet later at one of the Hollywood's biggest award ceremonies - the Golden Globes. Director Steven Spielberg's presidential biopic Lincoln has been nominated for seven prizes putting it ahead of Ben Affleck's hostage drama Argo and Quentin Tarantino's western Django Unchained, both of five nominations, while few films are contenders the best movie award along with Life of Pi, by Ang Lee and Kathryn Bigelow's film Zero Dark Thirty.