The biggest lesson has been that controlling a disease outbreak like Ebola is impossible without community trust and engagement.
Everything starts and ends with leadership.
The African Union's intervention track record in conflict situations is mixed.
Wildlife crime is difficult to track but of deep concern since about 60% of primate species are now threatened with extinction.
There are cost-effective solutions to the problem of sub-standard drugs in Nigeria and other low-income countries.
Does South Africa have skeletons in the closet over the death of the UN Secretary-General?
The discovery of a new strain of HIV gives scientists a better understanding of the virus.
Measles infection can be easily managed with prompt health care and symptom management. But without care, mild symptoms can turn into life threatening secondary infections or long-term effects.
Unless member states try to solve the contradictions in expectations, UN peacekeeping will not be fit for purpose in the future.
Mathematical modelling tools may predict where tsetse flies are being driven to extinction.
The number of personnel deployed in UN peacekeeping has slowly been decreasing.
Surveys are likely to have missed multiple groups and individuals due to differences in survey techniques.
Photographs give unprecedented insight into the lives and humanity of those involved in the Ugandan rebel movement.
Drones could help United Nations peacekeepers save civilians' lives – but there are obstacles.
The independent strategic review, now before the Security Council, recognises many of the challenges ahead. But it appears overly sanguine about what can be achieved within a three-year period.
There needs to be more awareness of the benefits of insects as food, and support for farming and markets.
The solution to measles outbreaks is deceptively easy: vaccinate more children. This belies the challenges along the path to that solution.
The emergency in the DRC shows that despite all these positive changes, the global response to containing Ebola outbreaks is undermined by the lack of health care and public health infrastructure.
Even when cases of measles are detected in clinics, limited diagnostic and communication infrastructure can delay the response.
The current outbreak refuses to give in to efforts by an international team of health care workers, armed with vaccines and treatment that did not even exist during previous episodes.