Marissa Nielsen

WASHINGTON, March 31, 2026 — In case of an emergency, the Federal Aviation Administration requires aircraft to be able to evacuate within 90 seconds. However, as the median age of the global population increases, the growing number of elderly airline passengers poses new challenges during emergency situations.

WASHINGTON, April 28, 2026 — In tissue engineering, the tiniest bit of improper force can harm a living culture. 3D clumps of cells — known as spheroids — can be used to model complex human tissues, because they can re-create specific cell-to-cell and cell-to-matrix interactions. But these spheroids are also fragile, and common techniques of moving them manually via suction can easily damage them.

WASHINGTON, April 28, 2026 — Workplace hearing loss is one of the most common work-related illnesses. While hearing loss is preventable with earplugs, they can be uncomfortable, and users often remove them despite the risks. Low-frequency sounds, such as rumbling traffic and warehouse vibrations, are especially difficult to address because differences in ear physiology allow sound to leak into ears, despite protection from earplugs.

WASHINGTON, May 5, 2026 — Breast cancer impacts over 2 million women around the world each year. Following radiotherapy or chemotherapy, breast-conserving surgery is the first line of intervention for early-stage breast cancer. This surgery aims to remove the tumor while preserving as much of the healthy tissue as possible, but since precise tumor mapping during surgery is challenging, sometimes the tumor is not fully extracted.

WASHINGTON, May 5, 2026 — Earth's ice is melting. As icebergs break away from glaciers and melt away, the fresh meltwater mixes into its saltwater surroundings.

WASHINGTON, May 19, 2026 — Bacteria from the Middle East have caused precipitation all the way out in California. The same bacteria, which are known to attack plants, have also been found embedded within lumps of hail in West Africa.

WASHINGTON, May 19, 2026 — The effects of global warming are becoming increasingly evident and catastrophic. To prevent irreversible consequences, international scientific consensus emphasizes the importance of […]

WASHINGTON, June 23, 2026 — When a physics student asked baristas at the Warsaw Coffee Conference what their biggest question for scientists was, the baristas said they wanted to know how to stop channeling during brewing.

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WASHINGTON, July 14, 2026 — When playing the classic game “20 Questions,” one may begin with the common opener: “Animal, vegetable, or mineral?”