Two people were killed after a copter collided with a construction crane and fell to the street in Central London.
Climate Desk lays out the contents of China's air pollution.
They may tend to adopt easier policies first, according to a new report.
This week, 30 million people will gather in Allahabad, India. Among them: Harvard scientists asking how on earth is an event of this size possible?
In a planned community in Idaho, all teens would be required to carry loaded AR-15s.
Pollution has reached an all-time high, reminding us that China's economic growth has come at the cost of environmental disaster.
Climate adaptation policy remains pretty untested.
Extreme heat in Australia, snow in the Middle East.
Dr. Dan Xiao battles attitudes toward tobacco that more closely resemble the U.S. of the 1940s or '50s.
Thanks to rising seas, 95 percent of the city's marsh area could become mudflats by 2100.
Integration is the best way to make our cities safer.
Critics worry Paseo Cayalá is a high-end refuge that will allow the wealthy to ignore the rest of the city.
Race and gender ratios in the U.S. House: Still terrible.
As if they didn't have enough to worry about.
The plan isn't as crazy as it sounds. It's just bad policy.
Record-setting high temperatures combined with painfully dry conditions have sparked hundreds of brushfires across the country.
The country's survival depends on water management, and its political structures allow for decisive, speedy action.
A new report details the $450 billion annual federal investment in what gets built in America.
This 70-year track record of machine politics and lies helps explain why so few people trust the police.