ANIMATION The odd, wavy pattern that results from viewing certain phone or computer screens through polarized glasses has led researchers to take a step toward thinner, lighter-weight lenses. Called moiré, the pattern is made by laying one material with opaque and translucent parts at an angle over another material of […]

The morphing nozzle in action, 3D printing fiber-filled composite materials with on-demand control of fiber alignment for “4D printing. Credit: University of Maryland Engineers at the University of Maryland (UMD) have created a new shape-changing or “morphing” 3D printing nozzle that was featured as a Frontispiece in the January 5th […]

This composite image illustrates the possibility of a Roman Space Telescope “ultra deep field” observation. In a deep field, astronomers collect light from a patch of sky for an extended period of time to reveal the faintest and most distant objects. This view centers on the Hubble Ultra Deep Field […]

Over millions of years, most living organisms suffocated in oxygen-deprived oceans. In the aftermath, modern vertebrates conquered the world. (Credit: Rich Carey/Shutterstock) We think of mass extinctions as brief moments of havoc — profoundly devastating but over within a geologic instant. The Devonian, the second of the so-called “Big Five,” […]

On the left is an image of the Jewel Bug Nebula (NGC 7027) captured by the Hubble Space Telescope in 2019 and released in 2020. Further analysis by researchers produced the RGB image on the right, which shows extinction due to dust, as inferred from the relative strength of two […]

An MIT-led search for axions from nearby star Betelgeuse (pictured here) came up empty, significantly narrowing the search for hypothetical dark matter particle. Credit: Collage by MIT News. Betelgeuse image courtesy of ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella Search for Axions From Nearby Star Betelgeuse Comes Up Empty Results significantly narrow the […]

Using sea charts and satellites, the effort will trace how the kelp beds are changing in response to global warming and commercial harvesting. PHOTOGRAPH: GETTY IMAGES THIS STORY ORIGINALLY appeared in Canada’s National Observer and is part of the Climate Desk collaboration. An ambitious project to map and monitor sea kelp forests along the entire […]

The aerial scene depicts two Late Devonian early tetrapods — Ichthyostega and Acanthostega — coming out of the water to move on land. Footprints trail behind the animals to show a sense of movement. Credit: Davide Bonadonna It’s hard to overstate how much of a game-changer it was when vertebrates […]

Schematic of light-induced formation of Weyl points in a Dirac material of ZrTe5. Jigang Wang and collaborators report how coherently twisted lattice motion by laser pulses, i.e., a phononic switch, can control the crystal inversion symmetry and photogenerate giant low dissipation current with an exceptional ballistic transport protected by induced […]