An unusual terrorism case started in Nigeria late last week. Prosecutors in the capital city of Abuja accused two local men of being members of al-Qaida in the Arabian Peninsula, or AQAP. They were charged with accepting thousands of dollars from the group to recruit potential terrorists inside Nigeria and then send them to Yemen. Olaniyi Lawal, 31, and Luqman Babatunde, 30, have pleaded not guilty.
Most Americans use electricity, gas or oil to heat and cool their homes. But the small city of Brainerd, Minn., is turning to something a bit less conventional: the sewer.
As it turns out, a sewer — the place where a city's hot showers, dishwashing water and organic matter end up — is a pretty warm place. That heat can generate energy — meaning a city's sewer system can hold tremendous potential for heating and cooling.
It's just that unexpected energy source that Brainerd hopes to exploit.