A solar panel is typically made up of lots of silicon cells that together form a circuit. The electrons zip through the panels to create electricity in a very efficient manner. But what if scientists could create the same efficiency in a different material that was cheaper?
Fei Yu, a University of Cincinnati doctoral student in materials engineering, is studying how to make polymer solar cells more efficient. Right now their performance is well below the most efficient silicon solar panels.
This fall members of the African Union Commission are scheduled to release their recommendations for an African Space Agency. The feasibility study is chaired by South Africa and includes Nigeria, Ghana, Kenya, Egypt and Algeria.
For some, a space agency is the likely next step. Since 2010 satellite capacity across the continent has almost tripled, helping to fuel Africa's mobile revolution, according to University of Cincinnati aerospace engineering professor Grant Schaffner.
Many people struggle to make sense of Twitter. The constant stream of information containing up to 140 characters can often overwhelm. But believe it or not all the tweets in the world appear to fit into just six patterns.
The Pew Research Center and the Social Media Research Foundation studied thousands of tweets over a four-year period and came up with these six different conversational archetypes.