A black hole is an object with such a strong gravitational pull that nothing, not even light, can escape from it.
Two new books about Zimbabwe deal with the coup in November 2017. But the country's treasures haven’t been dug up yet.
Why opportunities should be found to advance cooperation between Africa, China and the US as confidence building measures in US-China relations.
Medium-scale farms are an important driver of agricultural and rural transformation in much of Africa.
Christian leaders played a very significant role in fighting apartheid. One of them, Peter Storey, tells in his autobiography what shaped his convictions.
How is pain measured? A person’s pain is what they say it is.
For a long time South Africa thought it had a Jacob Zuma problem. In fact its got a systemic ANC problem.
It could be a matter of days before the ebola epidemic in the DRC spreads to urban centres or spills over into neighbouring countries.
Nigeria's forests are used by terrorists, kidnappers, cannabis cultivators, cattle rustlers and robbers.
Villagers from a community in South Africa's Eastern Cape fought to be consulted and for the power to consent to mining their land.
The Siemens scandal needs to be remembered because it's emblematic of what needs to be done to stop corruption.
Parents often see reading as "school business" - something that teachers are responsible for.
South Africa's electoral commission's failure to ensure a credible voters' roll threatens to undo its legacy of free and fair elections.
Five major finds this year adds to our understanding of evolution and ancient life history.
Cameroon being stripped off hosting the Africa Cup of Nations affects its international reputation and is likely to impact the economy.
Ordinary people are being deeply affected by the continued violence tearing apart Cameroon.
South Africa needs a policy that drives growth and positions if for the 21st Century.
Many African countries tend to mismanage their groundwater resources.
Well resourced and empowered nurses could help to quickly spread universal health care.
Drones are low cost and easy to operate. They give quality, high resolution outputs, and can be deployed fast and often.
Human Rights Day might not be a reason for celebrations. But it's a useful reminder of what's been achieved over 70 years.
The awarding of the Nobel Prize for Peace to Denis Mukwege and Nadia Murad should strengthen efforts against the use of sexual violence as a weapon of war.
There have been positive changes in Ethiopia but major challenges, including ethnic tensions, remain.
Ethiopia has a high number of injury-related deaths and disabilities among children.
School children with attention-deficit/ hyperactivity disorder (ADHD) have limited access to care in South Africa's education and health sectors.