A song about the very fine lines in life. 0

Can green news be covered without a Green blog? 0

The State Department finds no significant environmental barriers to approval of the Keystone XL pipeline. 0

A fresh exploration of ways to forge progress on a turbulent planet amid varied views on risks. 0

A fresh look at China's energy mix sees some progress on carbon dioxide, but a long path ahead. 0

A top Chinese climate policy official does the math showing why China will not be sharply cutting greenhouse gas emissions any time soon. 0

A contest seeks scientists' answers to a fundamental question: What is time? 0

Satellites offer a clear view of important shifts in Middle East water resources from a distance. 0

Adaption to heat is a prime imperative even as the much tougher task of moving beyond conventional use of fossil fuels is pursued. 0

A veteran of the space program hopes that a double-barreled close encounter with space objects can get humanity to take such threats seriously. 0

"My way or the highway" environmentalism and the Keystone pipeline fight. 0

White House protests resume over a pipeline from Canada even as oil keeps flowing to the U.S. from despoiled Nigeria. 0

Exploring how President Obama can move from rhetoric to real-world action on energy and climate. 0

A satellite probes one of the planet's most turbulent regions and finds a new source of risk -- declining groundwater supplies 0

A marine conservationist describes the path to creating the world's biggest shark sanctuary. 0

A really close encounter between a small asteroid and Earth provides a reminder that rare, but big, threats need to be seriously confronted. 0

A closer look at steps that may be taken to aid polar bears as the Arctic warms. 0

Lessons slowly learned from blizzards past. 0

Old-style environmentalism shows its worth in the imperiled forests of Indonesia. 0

An energy economist explores how American policies and open markets, not just technology and geology, lie behind the surprising shale oil and gas boom. 0