One person has died and two others have been stricken by an outbreak of leptospirosis - a rare bacterial infection commonly spread by rat urine.
The government of Equatorial Guinea has moved its headquarters from the coastal capital of Malabo to an unfinished city deep in the rainforest.
The death of more than 2,000 critically endangered Saiga antelope in Mongolia was caused by a disease that could now threaten the entire population.
• A dangerous tornado has ripped through east New Orleans, causing severe damage to buildings and homes and leaving thousands without power.
Scientists are calling for urgent action to halt the spread of a pest that is destroying maize crops is spreading rapidly across Africa.
Cattle were one of the first animals to be cloned.
The patients had caught malaria when visiting Africa. A key malaria treatment has failed for the first time in patients being treated in the UK, doctors say.
Trials conducted in Guinea, one of the West African countries most affected by an outbreak of Ebola that ended this year, show it offers 100% protection.
The Texas health authority advised people to protect themselves from mosquito bites
Poultry farmers have been advised to take measures to prevent the disease spreading
Forfeiting our commons
The Lancet’s Series on Maternal and Child Undernutrition
President Obama's grand climate plan does not add up
Climate change can no longer be ignored
NGO demands withdrawal of Niyamgiri gram sabha notificatio