Air pollution kills about 7 million people worldwide every year, with more than half of the fatalities due to fumes from indoor stoves, according to a new report from the World Health Organization published Tuesday.

The agency said air pollution is the cause of about one in eight deaths and has now become the single biggest environmental health risk.

Guinea announced on Monday that samples taken from three suspected cases of Ebola, which led to two deaths in the capital Conakry, had tested negative for the virus.

"The Pasteur Institute in Dakar worked urgently all last night on samples taken from suspected cases here in Conakry which were all negative," said Sakoba Keita, the health ministry's chief disease prevention officer.

The Obama administration and its opponents are renewing the Supreme Court battle over President Barack Obama's health care law in a case that pits the religious rights of employers against the rights of women to the birth control of their choice.

Two years after the entire law survived the justices' review by a single vote, the court is hearing arguments Tuesday in a religion-based challenge from family-owned companies that object to covering certain contraceptives in their health plans as part of the law's preventive care requirement.

Saudi Arabia says a man has died from a new respiratory virus related to SARS, bringing to 64 the deaths in the kingdom at the center of the outbreak.

The Health Ministry said the latest victim was a chronically ill 86-year-old Saudi man who died in Riyadh on Sunday.

Nike Ajibade and three of her colleagues sit on a Lagos pavement with small plastic bottles of liquids tucked inside weather-beaten plastic buckets.

The hidden bottles of so-called 'viagra' drinks sell for about $2 (1.4 euros) and are much sought-after for their supposed aphrodisiac qualities.

India must stop its doctors prescribing "irrational" treatments to cure tuberculosis, medical humanitarian group Medecins Sans Frontieres said Saturday, warning the practice is increasing drug-resistant strains of the disease.

India is already home to the highest number of tuberculosis (TB) sufferers globally with two million cases every year and drug-resistant strains are on the rise, Medecins Sans Frontieres or MSF said in a statement ahead of World TB day on Monday.

Guinea identified the Ebola virus Saturday as the source of a highly contagious epidemic raging through its southern forests, as the death toll rose to 59.

Experts in the west African nation had been unable to identify the disease, whose symptoms -- diarrhea, vomiting and bleeding -- were first observed six weeks ago, but scientists studying samples in the French city of Lyon confirmed it was Ebola, the Guinean health ministry said.

A London doctor and another man have become the first people to be charged in Britain over female genital mutilation, state prosecutors announced on Friday.

Dr. Dhanuson Dharmasena, 31, is accused of re-performing an FGM procedure on a woman who gave birth at his hospital in November 2012 following damage caused by labour.

Cuba's doctors got a big pay raise Friday -- to 64 dollars a month, the official Communist Party newspaper Granma said.

The hike in pay from $25 a month was to reward health professionals for being the country's top source of hard currency export earnings.

A London doctor and another man have become the first people to be charged in Britain over female genital mutilation, state prosecutors announced on Friday.

Dr. Dhanuson Dharmasena, 31, is accused of re-performing an FGM procedure on a woman who gave birth at his hospital in November 2012 following damage caused by labor.