Tech
In lab studies of wildfire, nitrous acid seems like a minor actor, often underrepresented in atmospheric models. But in the real-world atmosphere, during wildfires, the chemical plays a leading role--spiking to levels significantly higher than scientists expected, driving increased ozone pollution and harming air quality, according to a new study led by the University of Colorado Boulder and the Belgian Institute for Space Aeronomy.
Federal funding of new technology is crucial for astronomy, according to results of a study released Sept. 21 in the Journal of Astronomical Telescopes, Instruments and Systems.
Scientists at Oak Ridge National Laboratory used new techniques to create a composite that increases the electrical current capacity of copper wires, providing a new material that can be scaled for use in ultra-efficient, power-dense electric vehicle traction motors.
Using a NASA satellite rainfall product that incorporates data from satellites and observations, NASA estimated Hurricane Teddy's rainfall rates as it approaches Bermuda on Sept. 21. Teddy is a large hurricane and growing. It is also churning up seas all the way to the U.S. and Canadian coastlines.
Watches and Warnings on Sept. 21
NOAA's National Hurricane Center posted a Tropical Storm Warning for Bermuda and a Tropical Storm Watch is in effect from Lower East Pubnico to Main-a-Dieu, Nova Scotia, Canada.
Teddy's Status on Sept. 21
Projections based on climate models for the mid-Pliocene Warm Period (about 3 million years ago) suggest that countries in the tropical and subtropical southern hemisphere, including Brazil, may face longer droughts in the future. Annual rainfall may decrease as much as 30% compared with current levels.
One of the main variables considered in this scenario is a rise of 3 °C in the global average temperature, which may happen between 2050 and the end of the century unless the effects of climate change are mitigated.
How much carbon dioxide, a pivotal greenhouse gas behind global warming, is absorbed by plants on land? It's a deceptively complicated question, so a Rutgers-led group of scientists recommends combining two cutting-edge tools to help answer the crucial climate change-related question.
Children, who appear at a relatively lower risk from COVID-19, are disproportionally harmed by precautions involved with lockdowns, say Matthew Snape and Russell Viner in a Perspective. They note that while the role of transmission of SARS-CoV-2 by children is still uncertain, existing evidence points to educational settings playing a limited role when mitigation measures are in place. Meanwhile, ongoing school closures and losses of other systems that help and protect children are revealing indirect but very real harms being borne by them.
NASA's Terra satellite obtained visible imagery of recently formed Tropical Depression 14W as it strengthened into a tropical storm. Terra satellite imagery showed the storm was organizing.
Dolphin developed from Tropical Depression 14W. 14W formed on Sept. 20 about 366 miles east-southeast of Kadena Air Base, Okinawa Island, Japan. By 5 a.m. EDT (0900 UTC) on Sept. 21, the storm organized and strengthened into a tropical storm.
NASA Satellite View: Dolphin's Organization
A team of scientists from the National Center for Advancing Translational Sciences (NCATS) and Naval Research Laboratory (NRL) in Washington, D.C., has developed a new tool that mimics how SARS-CoV-2 -- the virus that causes COVID-19 -- infects a cell, information that could potentially speed the search for treatments against the disease.
ITHACA, N.Y. - Until now, the history of superconducting materials has been a tale of two types: s-wave and d-wave.
Now, Cornell researchers - led by Brad Ramshaw, the Dick & Dale Reis Johnson Assistant Professor in the College of Arts and Sciences - have discovered a possible third type: g-wave.
Their paper, "Thermodynamic Evidence for a Two-Component Superconducting Order Parameter in Sr2RuO4," published Sept. 21 in Nature Physics. The lead author is doctoral student Sayak Ghosh, M.S. '19.
When we think about sponges, we tend to think of something soft and squishy. But researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) are using the glassy skeletons of marine sponges as inspiration for the next generation of stronger and taller buildings, longer bridges, and lighter spacecraft.
WASHINGTON -- Researchers have demonstrated a new endoscope that uniquely combines photoacoustic and fluorescent imaging in a device about the thickness of a human hair. The device could one day provide new insights into the brain by enabling blood dynamics to be measured at the same time as neuronal activity.
Metamaterials--nanoengineered structures designed for precise control and manipulation of electromagnetic waves--have enabled such innovations as invisibility cloaks and super-resolution microscopes. Using transformation optics, these novel devices operate by manipulating light propagation in "optical spacetime," which may be different from the actual physical spacetime.
A UCLA-led report published today in the Journal of the American Medical Association Internal Medicine exposes what the authors call a weakness in the high-profile "Best Hospitals Honor Roll" published annually by U.S. News and World Report.
New research presented at this year's Annual Meeting of the European Association for the Study of Diabetes (EASD), held online this year, shows that having a greater exercise capacity is associated with a significantly decreased all-cause mortality risk of between 25-33% in people with type 2 diabetes (T2D). The study was conducted by Dr Yun-Ju Lai and colleagues at Puli branch, Taichung Veterans General Hospital, Nantou, Taiwan.