Lila Nordstrom watched the first of the twin towers fall from a 10th-floor window at Stuyvesant High School 25 years ago on Sept. 11, 2001.

Dr. Rupa Narra is a U.S. pediatrician who arrived in the Democratic Republic of Congo to help care for stricken children. Nothing could have prepared her for what she'd face.

The European climate service Copernicus said the Earth just sweltered through its hottest month on record in August. Scientists said the heat surge is mostly due to human-caused climate change.

After nine months of negotiation with hospital administrators, the nurses' union voted down the latest proposal from MyMichigan on Sept. 8. The three-day strike will start on Monday, Sept. 21.

NPR's Scott Detrow talks with theoretical astrophysicist Priyamvada Natarajan of Yale University about a strange blip recorded by a dark matter detector in South Dakota and what the fluke could mean.

In July, as wildfire smoke from Canada and Minnesota blanketed Michigan, air quality index readings in some areas of the state reached over 1,000, more than three times what the US Environmental Protection Agency considers hazardous.

The leader of the Education Department's special education office told employees she is resigning after less than four months in the role and as the agency overall is morphing and shrinking.

As the Earth warms, glacial collapses will become more common.

In the months following the terrorist attacks of Sept. 11, 2001, New Yorkers were assured that the air around the fallen twin towers in downtown Manhattan was safe to breathe. It’s taken nearly 25 years for New York City officials to finally admit that was not true.

Bangladesh has seen over 50,000 confirmed or suspected cases of measles this year. The death toll among children just surpassed 1,000. How are officials trying to bring the outbreak under control?