Science

Millions of people across the US South have gone without power or have been forced to evacuate following days of extreme downpours brought on by Hurricane Helene. North Carolina has borne the brunt of the devastation, with the state accounting for a third of all recorded fatalities to date. And as relief operations get underway, the eyes of the world are on a small town of about 2,000 in the western part of the state.

The original version ofthis storyappeared in Quanta Magazine.

It is late at night. You are alone and wandering empty streets in search of your parked car when you hear footsteps creeping up from behind. Your heart pounds, your blood pressure skyrockets. Goose bumps appear on your arms, sweat on your palms. Your stomach knots and your muscles coil, ready to sprint or fight.

Now imagine the same scene, but without any of the body’s innate responses to an external threat. Would you still feel afraid?

US space officials do not like to talk about the perils of flying astronauts on the aging International Space Station, elements of which are now more than a quarter of a century old.

However, a new report confirms that NASA managers responsible for operating the space station are seriously concerned about a small Russian part of the station, essentially a tunnel that connects a larger module to a docking port, which is leaking.

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THIS ARTICLE IS republished fromThe Conversationunder aCreative Commons license.

The sight of solar panels installed on rooftops and large energy farms has become commonplace in many regions around the world. Even in the gray and rainy UK, solar power is becoming a major player in electricity generation.

This story originally appeared on Inside Climate News and is part of the Climate Desk collaboration.

Years later, Luisa Connor and Vanessa Cárdenas would look back ruefully on the day foreigners visited their beachfront village with plans for a development next door. They had no idea the effort was backed by Silicon Valley billionaires who wanted to build a “startup city” or that a relatively new Honduran law would allow them to establish this semiautonomous enclave. They could not foresee they would lead a fight against it that would launch their village into national politics and prompt an international legal dispute, threatening to bankrupt the country. They thought it was just another hotel.

Our planet is choking on plastics. Some of the worst offenders, which can take decades to degrade in landfills, are polypropylene—which is used for things such as food packaging and bumpers—and polyethylene, found in plastic bags, bottles, toys, and even mulch.

Polypropylene and polyethylene can be recycled, but the process can be difficult and often produces large quantities of the greenhouse gas methane. They are both polyolefins, which are the products of polymerizing ethylene and propylene, raw materials that are mainly derived from fossil fuels. The bonds of polyolefins are also notoriously hard to break.

The OceanGate Hearings

Exclusive: Inside the Titan Submersible Disaster

Where Are These Key Witnesses?

‘I Told Him I’m Not Getting in It’

Painting a Damning Picture

Spotlight on the Titan’s Carbon Fiber Hull

With Few Solid Answers, What Comes Next?

Now Reading

The US Coast Guard’s Marine Board of Investigation (MBI) into the loss of the Titan submersible concluded today with testimony from two Coast Guard search-and-recovery personnel, Captain Jamie Frederick and Scott Talbot.

During the Age of Sail, ships circled the globe on voyages of discovery and trade. That era ended in the 1800s, when coal-fired steam engines began to replace wind power. Now we may be entering a new age of sail—but this time in space. Reversing history, engines and fuel could be replaced by sails on some spacecraft, pushed not by wind but by sunlight.

The idea is still in development, but we know it works. Just a few weeks ago, NASA hoisted sail on a new test craft, a satellite called the Advanced Composite Solar Sail System (ACS3). It has a square sail 9 meters wide that allows it to adjust its orbital path.

In 2004, Andre Geim and Konstantin Novoselov at the University of Manchester in England achieved a breakthrough when they isolated graphene for the first time. A flat form of carbon made up of a single layer of atoms, graphene is the thinnest known material—and one of the strongest. Hailed as a wonder material, it won Geim and Novoselov a Nobel Prize in physics in 2010.

Twenty years later, graphene is finally making its way into batteries, sensors, semiconductors, air conditioners, and even headphones. And now, it’s being tested on people’s brains.

The original version ofthis storyappeared in Quanta Magazine.

Nearly a century ago, the physicist Erwin Schrödinger called attention to a quirk of the quantum world that has fascinated and vexed researchers ever since. When quantum particles such as atoms interact, they shed their individual identities in favor of a collective state that’s greater, and weirder, than the sum of its parts. This phenomenon is called entanglement.

Researchers have a firm understanding of how entanglement works in idealized systems containing just a few particles. But the real world is more complicated. In large arrays of atoms, like the ones that make up the stuff we see and touch, the laws of quantum physics compete with the laws of thermodynamics, and things get messy.