Beijing experienced more than 200 days of air pollution categorized as “unhealthy” or worse in 2014, including 21 days that were “hazardous.”
In wealthier nations, women are more likely than men to consider climate change a serious problem, be concerned it will harm them personally and say that major lifestyle changes are needed to solve the problem.
But the degree of concern about climate change varies markedly from country to country.
Australia, Canada, Germany and the UK are among the other countries where there are partisan clashes on climate change issues.
A global median of 54% consider climate change a very serious problem. But there are regional differences on the issue, with the U.S. and China among the least concerned.
The U.S. Virgin Islands is the most "energy intensive" place on Earth -- meaning it uses the most energy per unit of GDP -- while gambling hub Macau is one of the least.
Canadians have positive views of the U.S. and are generally satisfied with their relationship. But they disagree on whether to build the Keystone XL pipeline, with more Canadians opposed to the project compared with Americans.
Global climate change was the top-rated threat in a recent 40-nation survey, but concern about the issue is relatively low in the United States and Europe.
One year after history-making political change swept the country, Indians’ fervor for their leader Narendra Modi has not abated. A new poll in India shows the public’s views of the country’s direction and the economy are on the rise.
People in sub-Saharan Africa are optimistic about their future, but they also recognize that their countries face tremendous challenges — identifying health care and education as top concerns.