New Delhi officials ordered a two-day halt to construction in an attempt to reduce choking pollution that cloaked the city in smog and dust.

The government’s Central Pollution Control Board rated the city’s air quality on June 15 as “severe”—the worst possible category—for the fourth day in a row.

According to a new paper by researchers at the University of Pennsylvania’s Annenberg School for Communication that was published in the journal Science, there is a quantifiable answer: roughly 25 percent of people need to take a stand before large-scale social change occurs. This idea of a social tipping point applies to standards in the workplace, and any type of movement or initiative.

Nearly 50 percent of Afghanistan’s children are not attending school because of war, poverty and other factors, according to a new report.

The Trump administration announced a 25 percent tariff on up to $50 billion worth of Chinese imports on Friday, instantly escalating a trade dispute between the world’s two largest economies.

Nighttime snacking and junk food cravings may contribute to unhealthy eating behaviors and represent a potential link between poor sleep and obesity, according to a study by University of Arizona Health Sciences researchers. The study also found that junk food cravings were associated with increased risk of diabetes and other health problems.

Chinese President Xi Jinping extolled free trade and criticized “selfish, short-sighted” policies during a closely orchestrated gathering of a Beijing-led bloc on June 10.

California voters’ decision to reduce penalties for drug and property crimes in 2014 contributed to a jump in car burglaries, shoplifting and other theft, researchers reported.

Clasping hands and forecasting future peace, President Donald Trump and Kim Jong Un committed Tuesday to “complete denuclearization” of the Korean Peninsula during the first meeting in history between a sitting U.S. president and a North Korean leader.

Officials with the U.S. Geological Survey said there is no way to know when Hawaii’s Kilauea volcano eruption will end or if more lava-spewing vents will open.

Austria’s government said Friday that it is closing seven mosques and plans to expel imams in a crackdown on “political Islam” and foreign financing of religious groups.

Africa’s last male northern white rhino died in March. There’s been a 50% decline in many fish populations since 1970. Only 1% of North America’s ash trees will survive the emerald ash borer beetle. What does this all mean for us?

After legalizing abortion and same-sex marriage in recent times, Portuguese lawmakers will decide May 29 on another issue that has brought a confrontation between faith and politics in this predominantly Catholic country: whether to allow euthanasia and doctor-assisted suicide.