The solar payback period is the length of time it will take for your solar system to pay for itself.

Bayern Munich playmaker Jamal Musiala will be out for a "long period" after he suffered a broken fibula and an ankle dislocation at the Club World Cup.

Hierarchical and complex Mathematical Expression Recognition (MER) is challenging due to multiple possible interpretations of a formula, complicating both parsing and evaluation. In this paper, we ...