At least 50,000 people marched through London in what was the UK's largest ever climate change demonstration.
More than 2,000 marches and other events are taking place across the globe.
Four or five rockets landed inside the base in the northern town of Kidal, said UN spokesman.
France urges members states to take all necessary measures to fight Islamic State.
Research reveals the economy loses billions of dollars every year due to poor sanitation issues worldwide.
Refugees and migrants are likely to keep coming to Europe at a rate of up to 5,000 per day.
United Nations says biometrics have decreased costs by 18% so more aid money can be given to refugees.
As many as 70,000 stateless children are born each year in 20 countries.
The UN contractors were detained by the rebel group, The Sudan People's Liberation Army (SPLA).
Yanghee Lee also said over 60 candidates, mainly Muslim, had been disqualified.
Disclosing secrets is often the only way to end human rights abuses and whistleblowers must be protected.
The diagnosis is clear: the Security Council reflects the geopolitical realities of 1945, not of today.
The world's most iconic landmarks will be lit blue to celebrate the occasion.
Craig has a UN role as global advocate against the use of landmines and explosives.
Iran claims its latest missile system can be controlled until the moment it hits its target.
European navies will be allowed to board, search, seize and divert any vessels being used by migrant smugglers.
Under the plans, concessions have been made to Libya's two broad factions.
UN stalls on ban on autonomous weapons amid fears a robot war could break out.
PLO secretary-general says event in New York is a further step towards a Palestinian state.
Global Burden of Disease Project predicts there will be 7.8 million cardiovascular disease related deaths by 2025.
Zimbabwe's President Robert Mugabe has rejected calls from the UN to implement gay rights in his country.
Discussions at the UN General Assembly come after the thawing of relations between West and Iran.