Cities provide paths from poverty to sustainability

New international agreements commit all UN member nations to solving humanity's greatest challenges over the next few decades, from eliminating extreme poverty and unhealthy living conditions to addressing climate change ...

Four pre-Inca tombs found in Peru's Lima

Archaeologists in Peru have found four tombs that are more than 1,000 years old in a pyramid-shaped cemetery that now sits in the middle of a residential neighborhood in Lima, experts said.

Solar tech could enable world's first underground park

Visitors from around the world are drawn to New York City's High Line, an elevated park built on defunct railroad tracks transformed into an urban sanctuary of flowers, grasses and trees.

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