physics

Density of states of phononic crystals consisting of steel cylinders embedded in high-density polyethylene (HDPE), depicted here for σ = 50. Separate calculations were performed for two distinct cases: xy modes perpendicular (left) and z modes parallel to the scatterers (right). Notably, when broadening η softens the parameter step function, numerous new complete band gaps (vanishing DOS) … Read more

Information regarding the total solar eclipse is shown on a digital bill board as drivers make their way down a busy road in Addison, Texas, Thursday, March 21, 2024. Credit: AP Photo/Tony Gutierrez Stock up on groceries. Print off driving directions. And be very, very patient. Small towns and rural enclaves along the path of … Read more

Credit: Science Advances (2024). DOI: 10.1126/sciadv.adk5979 Research led by Macquarie University sheds new light on how concentrations of metals used in renewable energy technologies can be transported from deep within the Earth’s interior mantle by low temperature, carbon-rich melts. The findings published this week in the journal Science Advances may assist global efforts to find … Read more

Exeter researchers analyzing bones recovered from the horse cemetery. Credit: University of Exeter Archaeological analysis of a near unique animal cemetery discovered in London nearly 30 years ago has revealed the international scale of horse trading by the elites of late medieval and Tudor England. Using advanced archaeological science techniques, including studying chemical composition, researchers … Read more

Credit: Unsplash/CC0 Public Domain An international team of scientists has warned against relying on nature providing straightforward ‘early warning’ indicators of a climate disaster, as new mathematical modeling shows new fascinating aspects of the complexity of the dynamics of climate. It suggests that the climate system could be more unpredictable than previously thought. By modeling … Read more

Conceptual illustration of transition state searches. Points along the reaction path (often called images, metaphorically represented by person) are incrementally updated to find a transition state (cross mark). Credit: Shin-ichi Koda A computational method for finding transition states in chemical reactions, greatly reducing computational costs with high reliability, has been devised. Compared to the most … Read more

Artistic image of a binary system of a red giant star and a younger companion that can merge to produce a blue supergiant. Credit: Casey Reed, NASA An international piece of research, led by the Instituto de Astrofísica de Canarias (IAC) has found clues to the nature of some of the brightest and hottest stars … Read more

The new microbe-explicit soil model (left) versus DayCent’s previous soil model that did not explicitly model microbe activity (right). Credit: Danielle Berardi et al. Of all the carbon stored in ecosystems around the world, about half can be found in soils. Depending on climate, vegetation, and management, soils can be either a carbon source or … Read more

A top panel of geologists has decided not to grant the ‘human age’ its own distinct place in earth’s geological timeline. A top panel of geologists has decided not to grant the ‘human age’ its own distinct place in Earth’s geological timeline after disagreeing over when exactly our era might have begun. After 15 years … Read more

Myrmarachne colombiana. Credit: George Poinar Jr. Arachnophobia can make humans flee at the sight of a brown recluse, black widow or even a daddy long legs, but animal predators of spiders know no such fear. That’s why, paleobiologist George Poinar Jr. explains, some spider species have developed the defense of deception. They masquerade as a … Read more