At the end of the last global ice age, the deep-frozen Earth reached a built-in limit of climate change and thawed into a slushy planet. Results provide the first direct geochemical evidence of the slushy planet -- otherwise known as the 'plume-world ocean' era -- when sky-high carbon dioxide levels...
Towards a hydrogen-powered future: Highly sensitive hydrogen detection system
Hydrogen, a promising fuel, has extensive applications in many sectors. However, its safe and widespread use necessitates reliable sensing methods. While tunable diode laser absorption spectroscopy (TDLAS) has proved to be an effective gas sensing method, detecting hydrogen using TDLAS is difficult due to its weak light absorption property in...
Bio-based fibers could pose greater threat to the environment than conventional plastics
New research has shown that bio-based fibers caused higher mortality, and reduced growth and reproductivity, among earthworms -- a species critical to the health of soils globally -- than conventional plastics. It has led scientists to suggest that materials being advocated as alternatives to plastic should be tested thoroughly before...
AI-powered system detects toxic gases with speed and precision
Researchers have developed an AI-powered system that mimics the human sense of smell to detect and track toxic gases in real time. Using advanced artificial neural networks combined with a network of sensors, the system quickly identifies the source of harmful gases like nitrogen dioxide that poses severe respiratory health...
Bacteria breakthrough could accelerate mosquito control schemes
Mosquito larvae grow faster if they're exposed to particular bacteria, according to a new study that could help global health programs.
Scientists tackle farm nutrient pollution with sustainable, affordable designer biochar pellets
What if farmers could not only prevent excess phosphorus from polluting downstream waterways, but also recycle that nutrient as a slow-release fertilizer, all without spending a lot of money? Researchers now show it's possible and economical.
Satellite imagery may help protect coastal forests from climate change
A new study details how climate change transforms coastal wetlands in North Carolina from forest to marshland or even open water, and how satellite imagery may help better direct conservation efforts to preserve those areas.
New trigger proposed for record-smashing 2022 Tonga eruption
Fifteen minutes before the massive January 2022 eruption of the Hunga Tonga-Hunga Ha'apai volcano, a seismic wave was recorded by two distant seismic stations. The researchers propose that the seismic wave was caused by a fracture in a weak area of oceanic crust beneath the volcano's caldera wall. That fracture...
Fossil of huge terror bird offers new information about wildlife in South America 12 million years ago
Evolutionary biologists report they have analyzed a fossil of an extinct giant meat-eating bird -- which they say could be the largest known member of its kind -- providing new information about animal life in northern South America millions of years ago.
Increased rates of severe human infections caused by Streptococcus subspecies
A concerning increase in global rates of severe invasive infections becoming resistant to key antibiotics has a team of infectious disease researchers studying a recently emerged strain of bacteria called Streptococcus dysgalactiae subspecies equisimilis. These infections range in severity from strep throat to flesh-eating disease.