Dark matter could have helped make supermassive black holes in the early universe

Dark matter could have helped make supermassive black holes in the early universe

A James Webb Telescope image shows the J0148 quasar circled in red. Two insets show, on top, the central black hole, and on bottom, the stellar emission from the host galaxy. Credit: MIT/NASA It takes a long time for supermassive black holes, like the one at the center of our Milky Way galaxy, to form. … Read more

Bringing environmental justice to disadvantaged communities

Bringing environmental justice to disadvantaged communities

Credit: Pixabay/CC0 Public Domain Not all communities in the United States face the same risks for environmental problems such as air pollution, noise and wastewater. But how can federal agencies fairly identify which areas deserve the most help? A new consensus study report from the National Academies of Sciences, Engineering and Medicine (NASEM) offers recommendations … Read more

Why Arctic cruise ship tourism is complicated

Why Arctic cruise ship tourism is complicated

Credit: Unsplash/CC0 Public Domain Nearly 1.7 million people visit Juneau, Alaska, between May and September, spilling into the city by the thousands each morning when their cruise ship docks. On any given day, the capital of Alaska has a population of almost 32,000 people. It’s easy to imagine the myriad effects, both good and bad, … Read more

New photoacoustic probes enable deep brain tissue imaging, with potential to report on neuronal activity

New photoacoustic probes enable deep brain tissue imaging, with potential to report on neuronal activity

New photoacoustic probes are allowing scientists to explore deeper into the brain as they can label and visualize neurons. Here, the scientific illustration features their novel photoacoustic dye that is used for labeling and imaging deep inside a mouse’s brain. Credit: Credit: Isabel Romero Calvo/EMBL To understand the brain better, we need new methods to … Read more

Plant-eating dinosaurs evolved backup teeth to eat tough food, research reveals

Plant-eating dinosaurs evolved backup teeth to eat tough food, research reveals

The teeth of Iguanodon weren’t as adapted for chewing, and formed much more slowly, than those of their later relatives. Credit: The Trustees of the Natural History Museum, London At the end of the Cretaceous, the duck-billed hadrosaurs were the most advanced herbivores on Earth. New research has revealed just how voracious these dinosaurs were, … Read more

How dangerous is Polaris Dawn space walk from SpaceX Crew Dragon?

How dangerous is Polaris Dawn space walk from SpaceX Crew Dragon?

Credit: Unsplash/CC0 Public Domain Billionaire Jared Isaacman could make history for all the right reasons during his Polaris Dawn mission when the hatch opens on a SpaceX Crew Dragon and he ventures out into the vacuum of space. He’s sold on its safety, especially the sheer amount of development time in the new extravehicular activity … Read more

Kamikaze termites protect their colony with the help of a special enzyme whose secrets have now been uncovered

Kamikaze termites protect their colony with the help of a special enzyme whose secrets have now been uncovered

Termites of the species Neocapritermes taracua with a blue body on the back formed by laccase BP76. Credit: Dr. Aleš Buček Researchers from the Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, in cooperation with colleagues from the Faculty of Tropical AgriScience of the Czech University of Life Sciences in Prague, … Read more

In six new rogue worlds, Webb Telescope finds more star birth clues

In six new rogue worlds, Webb Telescope finds more star birth clues

New image from the James Webb Space Telescope spectroscopic survey of NGC1333. Credit: ESA/Webb, NASA & CSA, A. Scholz, K. Muzic, A. Langeveld, R. Jayawardhana The James Webb Space Telescope has spotted six likely rogue worlds—objects with planetlike masses but untethered from any star’s gravity—including the lightest ever identified with a dusty disk around it. … Read more

UN’s Guterres issues ‘global SOS’ over fast-rising Pacific ocean

UN’s Guterres issues ‘global SOS’ over fast-rising Pacific ocean

A cemetery on Majuro Atoll is flooded by high tides and ocean surges in the low-lying Marshall Islands, which rises barely a metre above sea level. United Nations Secretary-General Antonio Guterres sent out a global climate “SOS” at a Pacific islands summit on Tuesday, unveiling research that shows the region’s seas rising much more swiftly … Read more

Discovery of a hidden epigenetic clock in mitochondria reveals a ‘lifespan limit line’

Discovery of a hidden epigenetic clock in mitochondria reveals a ‘lifespan limit line’

N6-methyladenine levels in the C. elegans mitochondrial genome gradually increase with age. (A) The 6mA progressively accumulates at different mtDNA sites (mito 3 and mito 4) during aging. (A’) Quantification of the relative mtDNA 6mA levels at different adult stages. Bars indicate ±S.D.; each comparison reveals ***: p International Journal of Molecular Sciences (2023). DOI: … Read more