Though it authorized our nation's earliest imperialistic land grab outside our continent, the 1856 Guano Islands Act is little known today. The act stated that the United States could claim any island ...

Tubbataha is the last great rookery for seabirds in the Philippines. It's spectacular, but just be careful when you look up, says Gregg Yan. The combined stench of rotting fish and guano is incredible ...

Some hot commodities are obvious: gold, oil, corn and more recently, hand sanitizer, are clearly worth a lot. But some valuable products are less evident -- and much more off-putting. New research has ...