U.S. President Donald Trump's withdrawal from the United Nations climate framework marks a significant escalation of anti-climate policy.

United Nations climate talks are bubbling to a critical point, with host Brazil pressing negotiators to make progress on key issues.

Prince Harry and Meghan have joined a diverse group, including Steve Bannon and Glenn Beck, to call for a ban on AI "superintelligence" that threatens humanity.

In the past few months United Nations-sponsored negotiations to tackle climate change, plastic pollution, loss of global species and a growing number of deserts have either outright failed or come out with limited outcomes that didn’t address the scale of the problems.

It’s the killer detail in international climate talks: Consensus.

If another pandemic happens, the world will again be unprepared.

The Bulletin of Atomic Scientists says the world is closer to Armageddon than it has ever been.

With an end-of-the-week deadline rushing at them faster than agreements are coming out of them, negotiators at the U.N. climate summit were in a difficult spot Wednesday.

A group of elder statesmen founded by Nelson Mandela says the United Nations needs to be more muscular and united if it wants to remain a central player in tackling the world’s multiple escalating crises.

Members of the group of prominent former world leaders founded by Nelson Mandela say the war in Ukraine can only end with a diplomatic solution that gives both sides something.

The former Irish President has called on African nations to pile on the pressure on rich, heavily-polluting countries to fulfill their climate pledges to the continent during a visit to Uganda.

Africa has contributed relatively little to the planet’s greenhouse gas emissions but has suffered some of the world’s heaviest impacts of climate change.

For many Iraqis, the name Colin Powell conjures up one image: the man who as U.S. secretary of State went before the U.N. Security Council in 2003 to make the case for war against their country.

As South Africa’s anti-apartheid icon Archbishop Desmond Tutu turns 90, recent racist graffiti on a portrait of the Nobel winner highlights the continuing relevance of his work for equality.

The interior ministry of the new Taliban government is seeking to end protests in Afghanistan after days of demonstrations that have brought heavy-handed assaults on protesters.