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Phys.org / As urban tree shade shrinks, mortality rises
As trees disappear from urban neighborhoods, lives may be lost with them. In a new study, Northwestern University scientists tracked death rates and fluctuations in tree canopy cover across an 11-year period in Chicago. They ...
Phys.org / Harvesting rainwater from rooftops could help cities stay cool and cut the number of heat wave days
Collecting rainwater from rooftops and using it to spray buildings during hot weather could help cities cut air conditioning use, lower urban temperatures and lessen the impact of heat waves, according to new research from ...
Tech Xplore / These 3D-printed objects can tell you if they're being used properly
Imagine a bottle of hazardous chemicals sitting on a laboratory shelf that changes its appearance to alert scientists that its lid is not properly secured, potentially preventing a dangerous spill.
Phys.org / August's total solar eclipse will sweep over Spain, Iceland and Greenland
For the first time in more than a century, a total solar eclipse is coming to mainland Spain with an even longer encore next summer.
Phys.org / Magnetic dopants help quantum dots use light for chemical reactions
Scientists at Los Alamos National Laboratory have demonstrated a new quantum-dot mechanism that could significantly expand the reach of light-driven chemistry. By introducing magnetic manganese dopants into semiconductor ...
Phys.org / Nano-optics: New mechanism for channeling light waves discovered in natural hyperbolic materials
Researchers at the 4th Physics Institute of the University of Stuttgart and the Istituto Italiano di Tecnologia (IIT) in Milan have demonstrated a new mechanism for directing light in a naturally hyperbolic van der Waals ...
Phys.org / Nanowires restore key functions in aging T cells
For decades, scientists have accepted that the immune system naturally weakens with age. Georgia Tech biomedical engineer and Carl Ring Family Professor Ankur Singh wasn't convinced. Then the COVID-19 pandemic made the stakes ...
Medical Xpress / Mammography use has dropped among some groups, study finds
Researchers at WashU Medicine have found a significant decline in mammography use among certain groups of women. A recent study, led by Adetunji Toriola, MD, Ph.D., a professor of surgery and a William H. Danforth Washington ...
Phys.org / Electric field reverses phonon chirality and spin direction in ferroelectric crystal
Chiral phonons are groups of atoms that move in a circular direction when excited by an energy source, such as heat. As the phonons move through a material, they propagate that circular motion, or angular momentum, through ...
Medical Xpress / Severe COVID-19 reactivates dormant viruses, study finds
Chronically infecting viruses—such as Epstein-Barr virus, cytomegalovirus (CMV) and herpesviruses—are common and often innocuous and asymptomatic. However, emerging evidence suggests their reactivation may contribute to autoimmune ...
Phys.org / Interlocking molecular propellers create stable 'islands' in artificial lipid membranes
Cells are enclosed by a cell membrane, a sophisticated structure mainly made of lipids that is vital for fundamental biological processes. Artificial lipid membranes have many practical applications, such as drug delivery, ...
Medical Xpress / Has the definition of autism become too broad to be useful?
The definition of autism may have become so broad that it risks confusion and even misdiagnosis, according to a new editorial by UCL professor Dame Uta Frith, whose pioneering research in the 1960s and '70s laid the foundations ...
