Tungiasis, a disease caused by fleas, is neglected and needs action in sub-Saharan Africa.
The number of giraffes in Africa has dropped by 40% over the past 30 years, but the reasons for this remain largely unknown.
Energy from the sun's rays can cause skin damage and cancers. Sunscreens can absorb or reflect the dangerous UV light. Here's how it works.
A real-time hand-held device can help employers measure the impact of the sun on workers.