Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
The UK was marking International Holocaust Memorial Day and the 80th anniversary of the liberation of the Auschwitz death camp, as various monuments were illuminated in purple to mark the day.
Sunrun was a pioneer with the solar-as-a-service model, and its customer additions continue to be weighted heavily toward subscribers through leases or power purchase agreements versus up-front sales ...