Obama pledged to tackle global warming in his presidential campaign. Now the world waits to see if he takes a leadership role at a climate change meeting at the UN Tuesday.
Ask yourself these questions to help decide the type of yard that fits your personality and works best for you.
Leaders agreed that warming must be stopped, but few specifics were reached on how to reduce greenhouse-gas emissions.
This week, negotiators from 182 countries meet in Bonn, Germany to lay the groundwork for a post-Kyoto climate regime.
Parents seek any advantage as competition heats up despite a lower birthrate.
Will Kenya be tapped as the next ‘Hague’ of the high seas?
As president heads to France, Europeans ask how best to respond to an ally that is suddenly sending all the signals it has hoped for.
In the first major redesign effort since Napoleon III, teams of architects offer ideas to reignite the City of Light.
Since 1970s, loose association of conservation-minded urban areas has grown up worldwide.