91av

News

Explore the most exciting new ideas and emerging concepts in science, health, technology and the environment with 91av’s exclusive in-depth articles, interviews and long reads.

Environment

Carbon removal schemes on farms could change Earth’s reflectivity

Carbon removal schemes involving enhanced rock weathering should consider whether the rocks they use are lighter or darker than the soil, say researchers

News

Technology

A hole-filled battery could make wearables more breathable than cotton

News

Mind

This optical illusion expands as you stare at it – and now we know why

News

Technology

Electric cars now last as long as petrol and diesel counterparts

News

Environment

Trump-backed Stargate Project could strain the US energy grid

News

Life

Giant sloths lived alongside humans in South America for millennia

News

Life

Dinosaurs may have first evolved in the Sahara and Amazon rainforest

News

Life

An orchid uses a finger-like appendage to pollinate itself

News

Earth

Dark oxygen: New deep sea expedition to explore mysterious discovery

News
Caption This image from NASA?s James Webb Space Telescope shows a portion of the Leo P dwarf galaxy (stars at lower right represented in blue). Leo P is a star-forming galaxy located about 5 million light-years away in the constellation Leo. A team of scientists collected data from about 15,000 stars in Leo P to deduce its star formation history. They determined that it went through three phases: an initial burst of star formation, a ?pause? that lasted several billion years, and then a new round of star formation that is still continuing. The image from Webb?s NIRCam (Near-Infrared Camera) combines infrared light at wavelengths of 0.9 microns (represented in blue), 1.5 microns (green), and 2.77 microns (red). The stars in Leo P appear blue in comparison to the background galaxies for several reasons. Young, massive stars that are common in star-forming galaxies are predominantly blue. Leo P also is extremely lacking in elements heavier than hydrogen and helium, and the resulting ?metal-poor? stars tend to be bluer than Sun-like stars. A bubble-like structure at bottom center is a region of ionized hydrogen surrounding a hot, massive O-type star. Credits Image NASA, ESA, CSA, Kristen McQuinn (STScI) Image Processing Joseph DePasquale (STScI)

Space

James Webb captures a beautiful smattering of blue stars

The striking blue stars of the Leo P dwarf galaxy appear dashed across the lower right corner of this image from NASA's James Webb Space Telescope

News

Physics

Extremely cold atoms can selectively defy entropy

News

Physics

Twisted crystals show hints of a new kind of superconductivity

News

Earth

Towering structures in Earth’s depths may be billions of years old

News

Health

Thinking a drug is a knockoff generic can cause worse side effects

News