As energy use rises and the planet warms, you might have dreamed of an energy source that works 24/7, rain or shine, quietly powering homes, industries and even entire cities without the ups and downs of solar or wind – and with little contribution to climate change.
The promise of new engineering techniques for geothermal energy – heat from the Earth itself – has attracted rising levels of investment to this reliable, low-emission power source that can provide continuous electricity almost anywhere on the planet. That includes ways to harness geothermal energy from idle or abandoned oil and gas wells. In the first quarter of 2025, North American geothermal installations attracted US$1.7 billion in public funding – compared with $2 billion for all of 2024, which itself was a significant increase from previous years, according to an industry analysis from consulting firm Wood Mackenzie.
As an exploration geophysicist and energy engineer, I’ve studied geothermal systems’ resource potential and operational trade-offs firsthand. From the investment and technological advances I’m seeing, I believe geothermal energy is poised to become a significant contributor to the energy mix in the U.S. and around the world, especially when integrated with other renewable sources.
A May 2025 assessment by the U.S. Geological Survey found that geothermal sources just in the Great Basin, a region that encompasses Nevada and parts of neighboring states, have the potential to meet as much as 10% of the electricity demand of the whole nation – and even more as technology to harness geothermal energy advances. And the International Energy Agency estimates that by 2050, geothermal energy could provide as much as 15% of the world’s electricity needs.
For generations, Maori people in New Zealand, and other people elsewhere around the world, have made use of the Earth’s heat, as in hot springs, where these people are cooking food in the hot water.Wolfgang Kaehler/LightRocket via Getty Images
Why geothermal energy is unique
Geothermal energy taps into heat beneath the Earth’s surface to generate electricity or provide direct heating. Unlike solar or wind, it never stops. It runs around the clock, providing consistent, reliable power with closed-loop water systems and few emissions.
I'm a big fan of Seanan McGuire's "October Daye" fantasy series, so I was intrigued by this story told from the viewpoints of two major characters: Toby herself and her new husband, Tybalt, King of Cats. Here are my reviews of the duology.
Sleep No More, by Seanan McGuire (DAW)
October Daye’s magical life has unfolded over the past
many volumes, from her awakening from being transformed into a fish to her rise
in prestige and power among the aristocracy of Faerie to her enemies-to-lovers
relationship (and marriage) to Tybalt, King of Cats. She’s impulsive,
rebellious, insightful, and passionate, all things that Tybalt and her many
friends love her for. If she has gained influential allies, she has also made
even more powerful enemies. First on that list is Titania, and Titania is now out
for revenge.
October wakes up one morning, content and unquestioning
in her life as a changeling handmaid to her sister, as well as any other purebloods who
feel like bossing her around. She’s not even entitled to defend herself, and
the worst part is that she accepts all this as the natural, perfect order.
Then strangers who claim to know her begin to appear, and the
edges of Titania’s bespelled paradise begin to unravel. Toby doesn’t know whom
to trust, especially when her ability to work blood magic starts to free others
from the enchantment. The only questions are whether this small band will be
enough to overcome the stranglehold Titania has wrought over reality and if Toby
will survive to see the end of it.
One of the challenges of a long-running series is the point
where all the logical “next adventure” stories have been told but readers want
more-more-more-of-the-same. One solution is to spin off other series featuring
minor characters. McGuire has taken a different approach, which is to turn the
reality of the original series inside-out, allowing the reader to become
re-acquainted with central and minor characters as Toby figures out which is her
real life, gathers a resistance force, and goes up against the Mother of
Illusions, the Summer Queen herself. For those familiar with the series, it’s a
grand reunion-with-a-twist. Therein lies much of its charm. The book has all
the strengths of a well-developed world and beloved characters plus all the
freshness of throwing the heroine into a snakepit of dangers unlike anything
she has faced before.
At a Senate hearing on Sept. 9, 2025, on the corruption of science, witnesses presented an unpublished study that made a big assertion.
They claimed that the study, soon to be featured in a highly publicized film called “An Inconvenient Study,” expected out in early October 2025, provides landmark evidence that vaccines raise the risk of chronic diseases in childhood.
The study was conducted in 2020 by researchers at Henry Ford Health, a health care network in Detroit and southeast Michigan. Before the Sept. 9 hearing the study was not publicly available, but it became part of the public record after the hearing and is now posted on the Senate committee website.
At the hearing, Aaron Siri, a lawyer who specializes in vaccine lawsuits and acts as a legal adviser to Secretary of Health and Human Services Robert F. Kennedy Jr., said the study was never published because the authors feared being fired for finding evidence supporting the health risks of vaccines. His rhetoric made the study sound definitive.
As the head of biostatistics at the University of Pennsylvania’s Perelman School of Medicine, when I encounter new scientific claims, I always start with the question “Could this be true?” Then, I evaluate the evidence.
I can say definitively that the study by Henry Ford Health researchers has serious design problems that keep it from revealing much about whether vaccines affect children’s long-term health. In fact, a spokesperson at Henry Ford Health told journalists seeking comment on the study that it “was not published because it did not meet the rigorous scientific standards we demand as a premier medical research institution.”
The study’s weaknesses illustrate several key principles of biostatistics.
Study participants and conclusions
The researchers examined the medical records of about 18,500 children born between 2000 and 2016 within the Henry Ford Health network. According to the records, roughly 16,500 children had received at least one vaccine and about 2,000 were completely unvaccinated.
The authors compared the two groups on a wide set of outcomes. These included conditions that affect the immune system, such as asthma, allergies and autoimmune disorders. They also included neurodevelopmental outcomes such as attention-deficit/hyperactivity disorder, or ADHD, autism and speech and seizure disorders, as well as learning, intellectual, behavioral and motor disabilities.
Their headline result was that vaccinated children had 2.5 times the rate of “any selected chronic disease,” with 3 to 6 times higher rates for some specific conditions. They did not find that vaccinated children had higher rates of autism.
The study’s summary states it found that “vaccine exposure in children was associated with increased risk of developing a chronic health disorder.” That wording is strong, but it is not well supported given the weaknesses of the paper.
Timeline logic
To study long-term diseases in children, it’s crucial to track their health until the ages when these problems usually show up. Many conditions in the study, like asthma, ADHD, learning problems and behavior issues, are mostly diagnosed after age 5, once kids are in school. If kids are not followed that long, many cases will be missed.
However, that’s what happened here, especially for children in the unvaccinated group.
About 25% of unvaccinated children in the study were tracked until they were less than 6 months old, 50% until they were less than 15 months old, and only 25% were tracked past age 3. That’s too short to catch most of these conditions. Vaccinated kids, however, were followed much longer, with 75% followed past 15 months of age, 50% past 2.7 years of age and 25% past 5.7 years of age.
The longer timeline gave the vaccinated kids many more chances to have diagnoses recorded in their Henry Ford medical records compared with the nonvaccinated group. The study includes no explanation for this difference.
When one group is watched longer and into the ages when problems are usually found, they will almost always look sicker on paper, even if the real risks are the same. In statistics, this is called surveillance bias.
The primary methods used in the paper were not sufficient to adjust for this surveillance bias. The authors tried new analyses using only kids followed beyond age 1, 3 or 5. But vaccinated kids were still tracked longer, with more reaching the ages when diagnoses are made, so those efforts did not fix this bias.
When a junior at an Orange County public high school in Florida visited the school library to check out a copy of “On the Road” by Jack Kerouac, it wasn’t in its Dewey decimal system-assigned location.
It turns out the title had been removed from the library’s shelves because of a complaint, and in compliance with Florida House Bill 1069, it had been removed from the library indefinitely. Kerouac’s quintessential chronicle of the Beat Generation in the 1950s, along with hundreds of other titles, was not available for students to read.
Gov. Ron DeSantis signed the bill into law in July 2023. Under this law, if a parent or community member objected to a book on the grounds that it was obscene or pornographic, the school had to remove that title from the curriculum within five days and hold a public hearing with a special magistrate appointed by the state.
On Aug. 13, 2025, Judge Carlos Mendoza of the U.S. Middle District of Florida ruled in Penguin Random House v. Gibson that parts of Florida HB 1069 are unconstitutional and violate students’ First Amendment right of free access to ideas.
The plaintiffs who filed the suit included the five largest trade book publishing houses, a group of award-winning authors, the Authors Guild, which is a labor union for published professional authors with over 15,000 members, and the parents of a group of Florida students.
I’ve spent the past 26 years training English language arts teachers at Arizona State University, and 24 years before that teaching high school English. I understand the importance of Mendoza’s ruling for keeping books in classrooms and school libraries. In my experience, every few years the books teachers have chosen to teach come under attack. I’ve tried to learn as much as I can about the history of censorship in this country and pass it to my students, in order to prepare them for what may lie ahead in their careers as English teachers.
Legal precedent
The August 2025 ruling is in keeping with legal precedent around censorship. Over the years, U.S. courts have established that obscenity can be a legitimate cause for removing a book from the public sphere, but only under limited circumstances.
In the 1933 case of United States v. One Book Called Ulysses, Judge John Munro Woolsey declared that James Joyce’s classic novel was not obscene, contradicting a lower court ruling. Woolsey emphasized that works must be considered as a whole, rather than judged by “selected excerpts,” and that reviewers should apply contemporary national standards and think about the effect on the average person.
In 1957, the Supreme Court further clarified First Amendment protections in Roth v. United States by rejecting the argument that obscenity lacks redeeming social importance. In this case, the court defined obscenity as material that, taken as a whole, appeals to a prurient – that is, lascivious – interest in sex in average readers.
The Supreme Court’s 1973 Miller v. California decision created the eponymous Miller test for jurors in obscenity cases. This test incorporates language from the Ulysses and Roth rulings, asking jurors to consider whether the average person, looking at the work as a whole and applying the contemporary standards in their community, would find it lascivious. It also adds the consideration of whether the material in question is of “serious literary, artistic, political, or scientific value” when deciding whether it is obscene.
Another decision that is particularly relevant for teachers and school librarians is 1982’s Island Trees School District v. Pico, a case brought by students against their school board. The Supreme Court ruled that removing books from a school library or curriculum is a violation of the First Amendment if it is an attempt to suppress ideas. Free access to ideas in books, the court wrote, is sacrosanct: “If there is any fixed star in our constitutional constellation, it is that no official, high or petty, can prescribe what shall be orthodox in politics, nationalism, religion or other matters of opinion.”
These 23 books were removed from Florida school libraries under Florida HB 1069. In his ruling in Penguin Random House v. Gibson, Judge Carlos Mendoza named them and stated, ‘None of these books are obscene.’Illustration by The Conversation
The Village
Library Demon-Hunting Society, by C. M. Waggoner (Ace)
I often dive into books without
reading the description, and in the case of The
Village Library Demon-Hunting Societyby C.
M. Waggoner, this yielded many delightful surprises and plot twists. I picked
it up thinking I’d find a cozy mystery, conveniently forgetting the “demon-hunting”
part of the title. Indeed, the opening is very cozy: a small town, a quaint
library with older, single librarian sleuth (Sherry Pinkwhistle, great name!) with
eccentric friends and a sweet beau, and a murder mystery. As she investigates, she
realizes something is not quite right. A suspect confesses but not all the
evidence fits. Sherry wonders why her little town has a disproportionate number
of murders and why she is always the one to solve them, much to the annoyance
of the local sheriff. And why, at the peak of the chase, the town is cut off
from the outside world.
At this point, things go seriously
demon-pear-shaped. Supernatural forces are at work, creating the same Murder,
She Wrote scenario over and over, while preying on Sherry’s private guilt.
By the time the sheriff yells at her in an inhuman voice that she must
investigate another murder, all Sherry’s suspicions are in full play. It’s off
to the library to do research!
Despite the demon-hunting weirdness,
the cozy quality and Sherry’s intrepid librarian superpowers never failed to
deliver a great read. The moral for demons and murderers alike: Never mess with
a librarian.
