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Science

Trump's latest rambling rally: 'I will take electrocution every single time'

Donald Trump began his Sunday rally on schedule and he started off with his attacks against electric vehicles, which, lately, have led him to complain about electric boats.

"So, let me ask you," Trump said in his rally speech. "Let's say a boat goes down and I'm sitting on top of a big powerful battery and the boat is going down, do I get electrocuted? ... But if I'm sitting down and that boat's going down and I'm on top of a battery, and the water starts flooding in, I'm getting concerned. But then I look ten yards to my left and there's a shark over there. So I have a choice of electrocution or a shark. You know what I'm going to take? Electrocution. I'll take electrocution every single time. Do we agree? But these people are crazy."

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Consciousness: why a leading theory has been branded ‘pseudoscience’

Civil war has broken out in the field of consciousness research. More than 100 consciousness researchers have signed a letter accusing one of the most popular scientific theories of consciousness – the integrated information theory – of being pseudoscience.

Immediately, several other figures in the field responded by critiquing the letter as poorly reasoned and disproportionate.

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Face pareidolia: how pregnant women could help us understand why we see faces in inanimate objects

Sometimes we see faces that aren’t really there. You may be looking at the front of a car or a burnt piece of toast when you notice a face-like pattern. This is called face pareidolia and is a mistake made by the brain’s face detection system.

But it’s an error that can help us understand the workings of the human mind. A recent study has argued that having a baby may affect this aspect of our brains, suggesting it may vary across our lifetimes.

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No water, roads or emergency services: How climate change left a rural neighborhood nearly uninhabitable

This article was first published by The Texas Tribune, a nonprofit, nonpartisan media organization that informs Texans — and engages with them — about public policy, politics, government and statewide issues. This story is part of the Pulitzer Center’s nationwide Connected Coastlines reporting initiative.

LIBERTY COUNTY, Texas — By the time they finally left Texas for good, Thad Todd, 64, and Linda Nelson, 58, had sworn off driving the flooded-out roads to their home. It was easier to stuff backpacks with food and water and hike the mile through the thicket.

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Puget Sound orcas beat up and even kill porpoises, new research reveals. But why?

SEATTLE — One might think of local southern resident orcas as sea pandas, playfully spy hopping through their day. The local porpoises will tell you different. Scientists for decades have observed fish-eating orcas mauling and killing Dall’s and harbor porpoises. But why do they do it? It’s not to eat them, the southern residents that frequent Puget Sound eat only fish, primarily Chinook salmon. Even when Chinook are scarce, they do not switch to eating the abundant sea mammals, including porpoises all around them, as transient, or Bigg’s killer whales, do. So what are they up to? In a study p...

People with Parkinson’s may benefit from cardio, weight training and yoga – here’s what you need to know

Many people associate Parkinson’s disease with the physical symptoms it causes – such as tremors, muscle stiffness and balance problems – which can all make everyday activities difficult. But just because Parkinson’s makes movement harder, doesn’t mean those with the disease should stop moving. This was highlighted in a recent video posted by British fitness influencer Joe Wicks on his YouTube channel. In the video, Wicks guides viewers through exercises they can do if they have Parkinson’s disease – and explains why it’s important to keep moving. There have been several scientific studies exp...

Just 3 Nobel Prizes cover all of science – how research is done today poses a challenge for these prestigious awards

I’ve been primarily an experimental chemist – the kind of person who goes into the laboratory and mixes and stirs chemicals – since the beginning of my career in 1965. Today, and for the past 15 years, I’m a full-time historian of chemistry.

Every October, when the announcements are made of that year’s Nobel laureates, I examine the results as a chemist. And all too often, I share the same response as many of my fellow chemists: “Who are they? And what did they do?”

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Tropical climates are the most biodiverse on Earth − but it’s not only because of how warm and wet they are

Life exists in every conceivable environment on Earth, from the peaks of towering mountains to the remote stretches of isolated islands, from sunlit surfaces to the darkest depths of the oceans. Yet, this intricate tapestry of existence isn’t spread uniformly.

For centuries, scientists have marveled at the extraordinary variety of species exhibited in tropical regions. The breathtaking biodiversity of the Amazon rainforest, the teeming life in Madagascar’s unique ecosystems, the species-rich cloud forests of Costa Rica – the tropics showcase nature’s opulence.

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A search for links between two of the universe’s most spectacular phenomena has come up empty – for now

Every so often, astronomers glimpse an intense flash of radio waves from space – a flash that lasts only instants but puts out as much energy in a millisecond as the Sun does in a few years. The origin of these “fast radio bursts” is one of the greatest mysteries in astronomy today.

There is no shortage of ideas to explain the cause of the bursts: a catalogue of current theories shows more than 50 potential scenarios. You can take your pick from highly magnetised neutron stars, collisions of incredibly dense stars or many more extreme or exotic phenomena.

How can we figure out which theory is correct? One way is to look for more information about the bursts, using other channels: specifically, using ripples in the fabric of the universe called gravitational waves.

In a new study published in The Astrophysical Journal, we cross-referenced dozens of fast radio burst observations with data from gravitational wave telescopes to see if we could find any links.

Gravitational wave astronomy

If you think of telescopes, you probably think of ones that look for electromagnetic signals such as light, radio waves or x-rays. Lots of stars and other things in the cosmos produce these signals. But dust and gas abundant in the galaxies in which star systems reside can dim or block these signals.

Gravitational waves are different: they pass straight through matter, so nothing can really get in their way.

Astronomers have so far detected gravitational waves from colliding systems of compact stars such as black holes and neutron stars, as well as discovering the engines behind gamma-ray bursts.

We also have reason to think fast radio bursts may produce gravitational wave signals.

What produces fast radio bursts?

Some fast radio bursts have been seen to repeat, but most are seen as single events.

For the repeating bursts, a recent simultaneous observation of x-rays and a radio burst from a highly magnetised neutron star in our own Milky Way galaxy proves this type of star can produce fast radio bursts. No source has so far been identified for the non-repeaters.

However, some theories involve astronomical objects and events we know produce strong gravitational waves. So if we have an idea of where in the sky a fast radio burst occurs, and when, we can do a targeted, sensitive search for gravitational waves over the same patch of sky.

The CHIME radio telescope

To look for new evidence on what causes fast radio bursts I co-led a targeted search using fast radio bursts detected by a radio telescope called CHIME in Canada.

As the CHIME/FRB project has detected hundreds of fast radio bursts, there’s a good chance of catching one close enough to Earth to be observed by a gravitational wave telescope. This is important as fast radio bursts are so bright they can be seen from billions of light years away – much farther than present gravitational wave observatories can see.

So what did we do and how did we do it? The project team gave us the data for a few hundred fast radio bursts. As much of this data is still not publicly available, we signed a special agreement that we would not share the details outside the search teams.

We then estimated the distance to each fast radio burst, and searched for gravitational wave data around the 40 closest events (which had evidence of being within gravitational wave detector range).

Our search team was a small group of scientists from the LIGO gravitational wave observatory in the United States, the Virgo observatory in Italy, and collaborators from the fast radio burst team CHIME/FRB.

A photo showing an array of radio antennas beneath a sunny sky.

The CHIME radio telescope has detected hundreds of fast radio bursts. The CHIME Collaboration, CC BY

We looked for gravitational wave signals around the sky position of each non-repeating fast radio burst around the time each occurred. For these non-repeaters, we did two kinds of search: one that looked for known gravitational wave signals, like those from colliding black holes or neutrons, and another that essentially looked for any burst of energy that was out of the ordinary.

For the repeating bursts, because we know that at least one such source is associated with a magnetised neutron star, we looked for the kind of gravitational wave signals we might expect from an isolated neutron star.

What did we find out?

Did we discover anything? Well, not this time.

It was not such a surprise, as we think fast radio bursts are much more common than detectable gravitational wave signals. In other words, gravitational wave sources would only account for a small fraction of fast radio bursts.

However, the closest fast radio burst in our sample was almost close enough for us to rule out the possibility it was caused by a collision between a neutron star and a black hole. Uncertainty in the distance to the burst means we can’t rule it out conclusively, but we are encourage by the fact the sensitive range of gravitational wave detectors is closing in on the distance to fast radio bursts.

What next?

Despite no definitive results this time, future searches could be a vital stepping stone to understanding fast radio bursts.

Gravitational wave detectors have become more sensitive than when we conducted this search, and will continue to improve in the coming years. This means they will allow a greater reach throughout the cosmos, so we can test a much larger sample of fast radio bursts.

We are also targeting future fast radio bursts from the known repeating source in our own galaxy mentioned above.

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Trump's fraud defense so bad it is 'defying the very laws of physics': expert

A judge has already shredded one of Donald Trump's defenses in his upcoming New York fraud trial.

In his order finding Trump had committed bank fraud, Judge Arthur Engoron has already addressed and dismissed the former president's claims that past lies on his financial statements may be justified because the value of his properties and other assets eventually went up, reported The Daily Beast.

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Sea glass, a treasure formed from trash, is on the decline as single-use plastic takes over

When you stroll along a beach, you may look down and spot colorful bits of worn glass mixed in with the sand. But the little treasures you’ve found actually began as discarded trash.

As an environmental science professor, I find these gifts from the sea particularly interesting. I have analyzed sand from across the world and added samples, including one of sea glass, into a collection for the environmental, earth and atmospheric sciences at UMass Lowell. The way this trash-turned-treasure washes up on beaches reflects an intersection between human activity and Earth’s natural processes.

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Your microbes live on after you die − a microbiologist explains how your necrobiome recycles your body to nourish new life

Each human body contains a complex community of trillions of microorganisms that are important for your health while you’re alive. These microbial symbionts help you digest food, produce essential vitamins, protect you from infection and serve many other critical functions. In turn, the microbes, which are mostly concentrated in your gut, get to live in a relatively stable, warm environment with a steady supply of food.

But what happens to these symbiotic allies after you die?

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In Shawnee National Forest, a debate swirls around how to best protect trees amid climate change and wildfires

The Shawnee National Forest in southern Illinois is a mosaic of towering trees, lush wetlands and commanding rock formations that are the native habitat for a wealth of plants and animals, including 19 species of oaks. The forest is also a microcosm of an emergent national debate about how North America should manage public lands as wildfires burn through Canada, Hawaii and Louisiana. Climate change is catalyzing extreme weather events and drying ecosystems, making forests increasingly vulnerable. “It’s impossible to take our hands all the way off. We’ve caused this climate change. We’ve intro...