New high-resolution maps show that we've gobbled up green space more than twice the size of Texas.
The city's emergency manager has approved a deal to turn scores of blighted properties into a lush green space with maple and oak trees.
A municipal arborist whittled this damaged tree into a street chair for the neighborhood.
America's urban trees absorb 25.6 million tonnes of CO2 annually. That carbon storage is worth $50.5 billion a year, but can cities profit?
Debating the merits of planting forests on the sides of tall buildings.
Now these are some trees with personality.
An investigation of how canine urine contributes to urban plant death.
The debate over how to secure our nation's power grids comes courtesy of yet another climate change-related feedback loop.
Lawns can play a key role in absorbing carbon dioxide emissions.
For the second time in less than a year, this seaside community is in an uproar over something to do with trees.
Warmer temperatures help city trees grow eight times faster.
Tennessee reaps a $638 million yearly benefit from its urban trees – and an $80 billion loss if they disappeared.