Citing cost and opposition from building owners, the Big Apple drops an ambitious plan to reduce greenhouse gas emissions by making 22,000 buildings more energy efficient.
Video: Representatives from nearly 200 nations meet in Denmark for a summit that environmental groups hope will lead to comprehensive measures to stop global warming. NBC's Anne Thompson reports.
Monarch butterflies raised on the International Space Station found their near-zero gravity enclosure to be a terrible place for a flight. Watch their flailing fail.
In a widely published editorial, The Guardian (UK) newspaper calls on the 192 nations gathered in Copenhagen this week to take decisive action on climate change.
Earlier this week Gov. Schwarzenegger rolled out a map showing what the city would look like under 5 feet of water -- and warned of serious problems to come.
Model and Dancing with the Stars contestant Joanna Krupa has raised the hackles of the Catholic League over her PETA ad depicting her strategically holding a cross.