Emit

Researchers have analyzed an ultracool brown dwarf that is the coldest star known to produce radio emissions. Though not the absolute coldest, this star, discovered by Caltech astronomers in 2011, emits radio waves at a lower temperature than any previously studied. It serves as a bridge between the smallest hydrogen-burning stars and gas giants like Jupiter.Cooler than a campfire and smaller than <span class="glossaryLink" aria-describedby="tt" data-cmtooltip="<div…

CLIMATEWIRE | Gas stoves pollute homes with benzene, emitting more of the known carcinogen than present in secondhand smoke, according to a new study. The study — recently published in Environmental Science & Technology — is the first to examine benzene levels inside homes with gas stoves. It comes as battles grow over state and local efforts to phase out the appliances. Researchers sampled the air of California and Colorado homes with gas ovens and cooktops, comparing it to the air in homes with electric ones.…

A fluorescent compound from a plant root could help image cells quickly. Credit: Adapted from ACS Central Science 2023, DOI: 10.1021/acscentsci.3c00012Plants that emit a glowing light under ultraviolet (UV) light are no longer just a fantasy seen in science fiction TV shows and movies. The roots of a medicinal plant known as Toddalia asiatica or orange climber, have been found to emit an ethereal blue glow. Researchers in ACS Central Science have now uncovered two coumarin molecules that may be the source of this…

CLIMATEWIRE | Oil and gas operations in the Gulf of Mexico emit more methane than estimated in government inventories, according to researchers from the University of Michigan. Their study, published this week in the Proceedings of the National Academy of Sciences, is one of the first to focus primarily on offshore oil and gas emissions, comparing flyover observations to the data industry reports to the federal government. Researchers found higher methane emissions from shallow water platforms, especially those that…

The comparison of the different powertrains and fuel options reveals that battery electric trucks take the lead in reducing life-cycle GHG emissions. Credit: © International Council on Clean Transportation. A new study compares the life-cycle greenhouse gas (GHG) emissions of electric, hydrogen, natural gas and diesel trucks and buses in Europe. The results indicate a clear pathway to decarbonize the sector: Battery…

Examples of intact soil cores a) collected/stored (soils in image are not from Puerto Rico) and b) sealed into incubation jars (soils in image are from Puerto Rico but may not have been used for gas measurements) for N2 and N2O measurement using the Nitrogen Free Air Recirculation Method (N-FARM). Credit: Journal of Geophysical Research: Biogeosciences (2023). DOI: 10.1029/2022JG007210 Nitrogen changes form as it cycles…

Forecasters have issued a warning against 3 sunspots which could emit dangerous solar flares. The Sun has entered its middle age, estimated to be around 4.57 billion years. Scientists say during its last years in the solar system, the Sun will engulf nearby planets like Mercury, Venus and Earth. The study concluded that the Sun will reach its peak temperatures nearly 8 billion years into the future after which it will lower its surface temperature and increase its size. It is during this expansion that the Sun will…

NASA sensors will soon help scientists detect methane emitted by landfills across the globe, according to the US space agency.A new project from a nonprofit group, Carbon Mapper, will use NASA instruments and data to measure emissions from solid waste sites such as landfills across the globe.Currently, there is limited actionable information about methane emissions from the global waste sector.Read Also"A comprehensive understanding of high-emission point sources from waste sites is a critical step to mitigating them,"…

An orbital NASA instrument designed mainly to advance studies of airborne dust and its effects on climate change has proven adept at another key Earth-science function - detecting large, worldwide emissions of methane, a potent greenhouse gas. The device, called an imaging spectrometer, has identified more than 50 methane "super-emitters" in Central Asia, the Middle East and the Southwestern United States since it was installed in July aboard the International Space Station, NASA said. The newly measured methane hotspots…

This image shows a methane plume 2 miles (3 kilometers) long that NASA’s Earth Surface Mineral Dust Source Investigation mission detected southeast of Carlsbad, New Mexico. Methane is a potent greenhouse gas that is much more effective at trapping heat in the atmosphere than carbon dioxide. Credit: NASA/JPL-CaltechEMIT (Earth Surface Mineral Dust Source Investigation) was built to help scientists understand how dust affects climate. It can also pinpoint emissions of the potent greenhouse gas.<span…