Oliver Conway

But the UN says atrocities committed by one side, the paramilitary rapid support forces, bear the hallmarks of genocide.

A fact-finding mission says the RSF went on a three-day killing spree in the western region of Darfur after capturing the city of Al-Fasha following a brutal 18-month siege.

The UN report says civilians from non-Arab groups were killed, abused and raped by the largely Arab RSF.

Mona Rishmawi is one of the UN investigators.

The RSF has always denied allegations of genocide.

I heard more about the UN findings from our Africa correspondent, Barbara Platt-Husher.

And of course, the RSF grew out of the Janjaweed militia who were involved back then.

And is it likely that members of the RSF will ever be brought to justice?

Barbara Platt, ASHA Africa correspondent.

In the past year, China has installed more solar and wind power than the rest of the world put together.

The communist nation is still the world's biggest polluter, but for the first time, President Xi Jinping has pledged to reduce greenhouse gas emissions.

Analysts say they are already beginning to flatline.

Our China correspondent Laura Bicker has this report.

China has created a desert that no longer just reflects the sun, it captures it.

As we travel through Inner Mongolia, miles of solar panels stretch in front of us.

On the Ordos Plateau, 58-year-old Xin Guiyi is feeding his small flock of sheep.

His friend Fan Yong laughs at our idea of what is cold.

Farmers here believe in climate change.

They see winters becoming warmer and wetter.

And Mr. Xin and others welcome China's push to become a renewable superpower.