The death of Abu Ibrahim al-Hashimi al-Qurayshi is unlikely to pose a major setback for the group, which has already mounted serious attacks in Iraq and Syria this year.

The Olympics are becoming less sustainable, and the winter games in Beijing are no exception. Can organizers make them more environmentally friendly as the climate crisis intensifies?

Experts have warned that time is running out to avoid climate catastrophe. Will the global climate conference spark action?

Experts expect that most new Afghan refugees will flee to neighboring Iran and Pakistan, where hundreds of thousands of Afghans already reside.

Vaccines are a major public health success story, but the COVID-19 pandemic underscores the many challenges involved in getting a vaccine to everyone who needs it.