One year later, lone gray wolf still prowling Calif.

(AP)—He doesn't like busy Interstate 5 or eating cattle, at least so far. He gets along with his distant cousins the coyotes, likes to swim and roams a lot—an awful lot—around the northernmost reaches of California.

Small bacteria helping big things grow in the ocean

Around 71 per cent of the Earth's surface is made up of salt-water oceans - that's 98 per cent of all water. The ecosystems that exist beneath their surface are diverse and vibrant. Their sheer scale, however, means that ...

Lessons from Iraq: Urban marshes and city survival

Jennifer Pournelle is continuing to build the case that natural wetlands, rather than irrigated fields, are the fertile ground from which cities initially emerged in Mesopotamia. And her conclusions about the importance of ...

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