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Phys.org / Combining the general and the specific for urban science and policy

As the world's population becomes more and more urban, cities are emerging as key components of the Anthropocene—both as major contributors to climate change and as potential trendsetters for innovation and action. But in ...

6 hours ago
Phys.org / Science fiction? Musk's lofty SpaceX goals unrealistic, skeptics say

Elon Musk's SpaceX has made awe-inspiring achievements since its founding more than two decades ago and has big ideas—colonies on Mars, orbital AI data centers, rapidly reusable rockets—for the future.

7 hours ago
Phys.org / SpaceX IPO set for liftoff in record market debut

Elon Musk's SpaceX was set to begin trading on the Nasdaq exchange Friday, with the biggest initial public offering in history expected to make the polarizing entrepreneur the world's first trillionaire.

6 hours ago
Medical Xpress / Gut microbes unlock hormone signaling that regulates gut movement, study suggests

Millions of people worldwide are periodically or chronically affected by gut-related conditions, such as irritable bowel syndrome (IBS), gastroesophageal reflux disease (GERD) and gastroenteritis. Uncovering the physiological ...

23 hours ago
Tech Xplore / Waymo unveils virtual driver model to test autonomous car crash avoidance

Autonomous vehicles are already a reality on some of our streets and could become a major part of future transportation systems. Safety, of course, is the main concern, as with all vehicles. To help evaluate and improve its ...

21 hours ago
Phys.org / Ancient DNA from Tuscan wells reveals origins of modern wine

Scientists analyzing 2,000-year-old grape seeds from ancient wells in Tuscany have mapped the most extensive genetic history of ancient grapevines recovered from a single site.

16 hours ago
Phys.org / Cosmic dawn fuel discovery unlocks early galaxy growth secrets

Astronomers have discovered a huge reservoir of cold molecular gas, the direct fuel for star formation, in REBELS-25, a massive, star-forming galaxy. The team, led from Leiden University, focused on REBELS-25, seen when the ...

15 hours ago
Phys.org / 'Selection shadow' may explain why longer lives bring more age-related disease

A review article now published in Nature Reviews Genetics brings together evolutionary theory, comparative genomics and large-scale human genetics to explain why we age and why aging rates differ among individuals and species. ...

18 hours ago
Phys.org / Genomes from Oceania offer new clues to human evolution

A new Yale-led study provides one of the most detailed and comprehensive analyses to date of genetic variation in human populations in Oceania, filling a major gap in representation in genomics research. Despite harboring ...

18 hours ago
Phys.org / Light echoes reveal possible dark matter buildup around supermassive black holes

We may not know what dark matter is, but we keep getting whiffs of it. "We are reaching a point where the observational evidence for dark matter is simply undeniable," said Mayank Sharma, a Virginia Tech graduate student ...

16 hours ago
Phys.org / CO₂ injection reveals hidden cement chemistry behind 13% stronger early strength

One September day, it started to snow inside MIT's Pierce Laboratory. Researchers depressurized a tank of liquid carbon dioxide (CO2), instantly freezing it and releasing solid flakes. These were blended into cement paste ...

15 hours ago
Tech Xplore / 'Battery on wheels': Sweden powers homes with EVs

When they get home, the residents of a small housing association on the outskirts of Hudiksvall, Sweden, plug in their electric vehicles to charge them or, intriguingly, power their homes.

8 hours ago