There’s something strange going on with the Milky Way. Recent measurements suggest that stars at the outskirts of our galaxy are misbehaving. They’re traveling far slower than similarly situated stars in other galaxies. One possible explanation for the Milky Way’s stellar slowpokes is that our galaxy is extraordinarily deficient in dark matter, the invisible substance… Continue reading The Milky Way May Be Missing a Trillion Suns’ Worth of Mass
Tag: Quantum Stuff
Why Women Earn Less Than Men: Economic Historian Wins Nobel for Work on Gender Pay Gap
October 11, 2023 4 min read Claudia Goldin mined 200 years of data to show that greater economic growth did not lead to wage parity or more women in the workplace By Philip Ball & Nature magazine Claudia Goldin, the Henry Lee Professor of Economics at Harvard University, speaks at a press conference after being named this… Continue reading Why Women Earn Less Than Men: Economic Historian Wins Nobel for Work on Gender Pay Gap
A Soggy Mission to Sniff Out a Greenhouse Gas ‘Bomb’ in the High Arctic
Jocie Bentley (tape): PSA: don’t bring hiking boots when walking the tundra. Your feet will get soaked like a wet sponge. Gabriel Hould Gosselin (tape): Almost there. [laughs] About halfway. Well, it’s a lot faster with snowmobiles. Bentley: Hey, I’m Jocie Bentley, and this is the final episode of a three-part Science, Quickly Fascination series from… Continue reading A Soggy Mission to Sniff Out a Greenhouse Gas ‘Bomb’ in the High Arctic
Monkeys with Transplanted Pig Kidneys Live for Up to Two Years or More
People seeking a kidney transplant often have to wait years for a donor organ to become available—and many die before ever receiving one. Xenotransplantation, in which organs from one species are transplanted into another, could alleviate the organ shortage. But bridging millions of years of evolutionary divergence between two species is a tall order, so… Continue reading Monkeys with Transplanted Pig Kidneys Live for Up to Two Years or More
Evolving Bacteria Can Evade Barriers to ‘Peak’ Fitness
For many decades, exploring fitness landscapes was primarily the reserve of theoreticians working with simulated organisms, or pioneering experimentalists working on a relatively small scale. But with the rise of easy, inexpensive gene editing technology, the team behind the new paper wondered if they could build a very large adaptive landscape using living organisms, said… Continue reading Evolving Bacteria Can Evade Barriers to ‘Peak’ Fitness
The New Quest to Control Evolution
Evolution is a complicated thing. Much of modern evolutionary biology seeks to reconcile the seeming randomness of the forces behind the process — how mutations occur, for example — with the fundamental principles that apply across the biosphere. Generations of biologists have hoped to comprehend evolution’s rhyme and reason enough to be able to predict… Continue reading The New Quest to Control Evolution
Key Biden Climate Pollution Metric Is Safe–For Now
CLIMATEWIRE | The Supreme Court on Tuesday declined to take up a fight by Republican-led states over the federal government’s method of estimating the costs of climate change, in a win for President Joe Biden’s push to address rising emissions. In a short, unexplained order, the justices rejected a challenge led by Missouri Attorney General Andrew… Continue reading Key Biden Climate Pollution Metric Is Safe–For Now
A Century Later, New Math Smooths Out General Relativity
Dong and Song proved a conjecture that was formulated in 2001 by the mathematicians Gerhard Huisken and Tom Ilmanen. The conjecture states that as the mass of a space approaches zero, so too must its curvature. Huisken and Ilmanen recognized, however, that this scenario is complicated by the presence of bubbles and spikes (which are… Continue reading A Century Later, New Math Smooths Out General Relativity
Many-Mirrored Galaxies Deepen Dark Matter Mystery
If you’re looking for intergalactic eye candy and cosmic bling, it’s hard to beat Abell 3827, a crowded cluster of hundreds of galaxies about 1.3 billion light-years from Earth. Hubble Space Telescope images of the cluster show a bright central quartet of merging galaxies shimmering like diamonds and perched on an ethereal azure engagement ring.… Continue reading Many-Mirrored Galaxies Deepen Dark Matter Mystery
Your Brain Finds It Easy to Size Up Four Objects But Not Five–Here’s Why
October 11, 2023 3 min read Neuron activity shows that the brain uses different systems for counting up to four, and for five or more By Nature magazine & Mariana Lenharo How many apples? Humans can size up a grouping of four or fewer items in an instant, but larger quantities pose a challenge. For… Continue reading Your Brain Finds It Easy to Size Up Four Objects But Not Five–Here’s Why