The suspension of Nigeria's most senior judge by President Muhammadu Buhari broke international human rights standards, a UN expert said.
An Ebola outbreak that ravaged Sierra Leone, Guinea and Liberia in 2014 cost economies an estimated $53 billion, according to a study.
A "Rwanda-like"genocide can be avoided if world powers deployed a protection force and set up a court to prosecute atrocities, a UN human rights chief said.
Isolated flare-ups of Ebola may point to a higher risk of transmission via the semen of male survivors, says the WHO.
Governments are not doing all they should to tackle the deadly Middle East Respiratory Syndrome, a committee of health experts said.
Data from the Large Hadron Collider outside Geneva appears to have proved the existence of particles made of five quarks.
Scientists hope the Large Hadron Collider will produce evidence of what has been dubbed 'new physics'.
Vulnerable countries need to defend themselves against the possible seasonal spread of Middle East Respiratory Syndrome, says the WHO.
The WWF's Living Planet Report, published every two years, said humankind's demands were now 50 percent more than nature can bear.
Experts said it was largely down to global action - a 1987 ban on man-made gases that damage the fragile high-altitude screen.
The amount of greenhouse gases in the atmosphere reached a record high in 2013, says World Meteorological Organisation.
Carbon dioxide levels throughout the northern hemisphere hit 400 parts per million for the first time in human history in April.
A billion people worldwide still practice 'open defecation' and need to be told that it leads to the spread of fatal diseases, UN experts say.