US approves land exchange for road through Alaska refuge

Interior Secretary Ryan Zinke signed a land trade agreement Monday that could lead to construction of a road through a national wildlife refuge in Alaska, portraying the exchange as a people-versus-wildlife issue.

New technique quickly predicts salt marsh vulnerability

Scientists working on a rapid assessment technique for determining which US coastal salt marshes are most imperiled by erosion were surprised to find that all eight of the Atlantic and Pacific Coast marshes where they field-tested ...

Obama recommends extended wilderness zone in Alaska

US President Barack Obama said Sunday he would recommend a large swath of Alaska be designated as wilderness, the highest level of federal protection, in a move likely to anger oil proponents.

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