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Medical Xpress / Is poor sleep contributing to the country's weight issues?
Some 70% of teens trying to adapt to a fall schedule are missing out on sleep. Early bells and tough classes combine with delayed biological clocks during adolescence, keeping their nightly sleep duration during the school ...
Phys.org / Deadly floods of 2021—Researchers identify gaps in hazard mapping
The catastrophic flooding in July 2021 claimed the lives of more than 200 people in Germany and Belgium. The high death toll makes it clear that hazard mapping and risk communication must be improved urgently. Researchers ...
Phys.org / Students with lower grades earn degrees more often when they belong to an academic major's majority group
Despite efforts to encourage broader participation, women earn about 25% of undergraduate engineering degrees and 18% of undergraduate computer science degrees—and men remain a small minority among people earning nursing ...
Phys.org / Sound waves and water droplets transform paper waste into higher-value chemical compound
Researchers at the University of Illinois Urbana-Champaign have developed a fast, simple way to turn lignin, a plentiful plant-based byproduct of the papermaking industry, into potentially more valuable renewable chemicals.
Phys.org / Researchers tune into Arctic under-ice sounds and test through-ice communication
Beneath the Arctic Ocean is an orchestra featuring natural and human composers, from cracking sea ice and whistling beluga whales to humming shipping-vessel engines. Researchers from MIT Lincoln Laboratory heard some of this ...
Phys.org / Iron Age Botswana site sourced copper across southern Africa—but tin from just one place
Around 700 years ago, people living on hilltop settlements on the edge of the Kalahari wore beads, bangles and clips made from metal traded across the southern half of the African continent.
Phys.org / Archaea as 'flexitarians': Ammonia-oxidizing microbes also feed on amino acids
Symbiotic ammonia-oxidizing archaea in marine sponges are not strict specialists but true "flexitarians." A team led by microbiologists Bettina Glasl and Katharina Kitzinger from the University of Vienna, in collaboration ...
Phys.org / A new type of LED light could bring significant efficiency gains
Researchers at Lund University have developed a new type of light-emitting diode based on thin, branched nanowires that could offer significantly higher efficiency and lower production costs than current technology. By controlling ...
Phys.org / Turbulent times for star formation in Stephan's Quintet
Star formation in galaxies is closely linked to molecular gas. In the distant past, when galaxy interactions were more common, these encounters compressed molecular gas, causing dense clouds to collapse under their own gravity ...
Medical Xpress / Energy-hungry tissues expand cleanup crews to clear worn-out mitochondria
The body's heart muscle (for pumping blood), skeletal muscle (for movement and posture) and brown fat (for heat production) each require a lot of energy and make a lot of waste. That waste needs to be managed.
Medical Xpress / Local neural wiring may set the brain's range of activity patterns
The human brain contains billions of neurons, specialized nerve cells that receive, transmit and process information through electrical and chemical signals. Human thoughts, sensory perceptions and behaviors are known to ...
Medical Xpress / Early mitochondrial stress reveals potential mechanism for lasting heart protection
Mitochondria are popularly known as the "powerhouse of the cell," but these cellular structures do much more—including acting as signaling hubs. Some signals that mitochondria send can reprogram the activity of the entire ...
