Mayor's office unveils tough new green building rules that will force many property owners to invest in energy efficiency
Study finds per capita emissions for urban dwellers are "surprisingly" low
Only the greenest computers and cars good enough for New York State government
Plan hailed as "one of the most aggressive moves from a city"
Shops and restaurants banned from leaving doors open while air conditioning is running in attempt to curb energy use
Court cases keep coming as states step up push for new carbon rules
Mayor Bloomberg invites proposals for New York renewable energy projects
New York rubber stamps plans that will see energy companies have to buy carbon credits at auction
Iconic yellow taxi fleet to move to hybrids at a rate of 300 a month