As the Covid-19 shutdowns and stay-at-home orders brought much of the world’s travel and commerce to a standstill, people around the world started noticing clearer skies as a result of lower levels of air pollution.

The depth of a hydraulic fracturing well in Oklahoma, among other factors, increases the probability that fracking will lead to earthquake activity, according to a new report in the Bulletin of the Seismological Society of America.

The Dragonfly Mercury Project engages citizen scientists such as students and teachers in the collection of juvenile dragonflies, also known as dragonfly larvae, from national parks for mercury analysis.

Respiratory droplets from a cough or sneeze travel farther and last longer in humid, cold climates than in hot, dry ones, according to a study on droplet physics by an international team of engineers.

Inside your mouth right now, there is a group of bacteria whose closest relatives can also be found in the belly of a moose, in dogs, cats, and dolphins, and in groundwater deep under the Earth’s surface.

Biomedical engineers at Duke University have engineered a method for simultaneously detecting the presence of multiple specific microRNAs in RNA extracted from tissue samples without the need for labeling or target amplification.

Bird poop may pose more health risks than people realize, according to Rice University environmental engineers who study antibiotic resistance.

Recent accounts in the media have described the appearance of lion’s mane jellyfish in waters and beaches in the Northeast as a surprising, sometimes troubling, event, with record sizes and numbers reported from Maine to the Massachusetts south coast.

Tropical Depression 8E developed on July 20 and quickly organized into a tropical storm.

NASA-NOAA’s Suomi NPP satellite passed over the Eastern Pacific Ocean and provided forecasters with a visible image of the waning Tropical Depression 7E.