Science

Science

Science@Cal is proud to present a series of free public science lectures on the third Saturday of every month. These talks are given by renowned UC Berkeley scientists and aimed at general audiences. Talks take place on the UC Berkeley campus at 11 am. Doors open thirty minutes before the talk and seating is on a first-come, first-served basis. Each talk is planned to last an hour, plus time for at least a few questions at the end.

You can lose 4045% of body heat from an unprotected head. That's the advice in a 1970s US Army Survival Manual, which is probably where this myth originated, says John Tregoning, a professor of vaccine immunology at Imperial College London. The reality is that there is nothing special about your head. When you go out in the cold, you lose more body heat from any area you leave exposed than from those parts protected by clothing.

Adolescence is second only to early childhood in the rapidity and sheer volume of changes occurring in brain development. Three different brain systems (and their interconnections) are at play: reward-driven behavior, harm avoidance, and regulatory behavior. At the same time, teens are experiencing powerful changes to their physical and sexual selves, accompanied by the hormonal cascade of puberty. During this period, there is an increase in brain receptors for dopamine, a neurotransmitter that has a strong effect on the experience of pleasure.

So Tony Cholerton, a zookeeper who had been a motorcycle engineer for many years, invented Robovacc a machine to quickly administer vital jabs without the presence of people. The result, a clever contraption he controlled from an adjacent room with a handset taken from remote-control toy aeroplanes, successfully administered vaccinations to Cinta in a feeding area. The tiger sat up briefly, mid-meal, as the needle penetrated her rear end, then calmly continued eating.

But as he swept his flashlight through the dark waters, something unexpected emerged. Inching through the beam of light, an alien creature crawled across the surface of the sand, resembling an inch-long cluster of ghostly leaves fringed with silvery filigree and capped with a pair of antennae-like stalks. It immediately caught my eye, said Gosliner, Invertebrate Zoology Curator for the California Academy of Sciences. I've been diving there for 30 years and this one immediately struck me as different.

In October, at a tech conference in Italy, Amazon and Blue Origin founder Jeff Bezos predicted that millions of people will be living in space " in the next couple of decades " and "mostly," he'd said, "because they want to," because robots will be more cost-effective than humans for doing the actual work in space.

That's what a startup called GRU Space - the letters apparently stand for "Galactic Resource Utilization" - is offering to would-be vacationers after the company opened its website for online reservations this week, as reported by Ars Technica. If all goes to according to plan, the first truly one-star hotel will start accommodating guests in the 2030s. It all sounds pretty far fetched,

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.

If you were a child of the '70s or '80s, you may remember the bubbling sound of hydrogen peroxide fizzing on an open wound. Back then, it was the go-to for parents who were looking to disinfect the cuts and scrapes that their kids would come home with. Since then, science has shown that it's actually not all that great for a wound, but there's no need to throw out that bottle if you do find one.

Infantry once relied on numbers to solve uncertainty. When soldiers could not see or hit targets precisely, the answer was more troops and more fire. Sniper technologies quietly overturned that logic. By extending range, improving accuracy, and increasing awareness, they allowed small teams to dominate space once controlled only by massed formations. Precision replaced presence, and patience became a battlefield advantage. Here, 24/7 Wall St. is taking a look at the sniper technologies that totally changed the game.

It was at a relatively minor event in upstate New York in September 2022 that Ilia Malinin, the self-anointed Quad God who was fast becoming the biggest name in figure skating, finally landed the jump that so many people had thought impossible. Others had tried quad axels in competition over the years. All of them had fallen. That extra 180 degrees of rotation necessary for the only jump in skating that starts with a forward-facing entry proved to be a half-revolution too much.

Except for penguins and Antarctic scientists, few will be able to enjoy February's annular solar eclipse. That's because this eclipse will see the moon pass between the Earth and sun across the path of the southern continent, reaching a maximum at around 12:12pm UTC. People living in Eswatini, Lesotho, Madagascar, Mozambique, South Africa, Zimbabwe, and the southern parts of Botswana, Malawi, Namibia, Tanzania and Zambia, will only see a partial eclipse March 3.

Campaigners have accused BP of having an insidious influence over the teaching of science, technology, engineering and maths (Stem) in the UK through its relationship with the Science Museum. Documents obtained under freedom of information legislation show how the company funded a research project that led to the creation of the Science Museum Group academy its teacher and educator training programme which BP sponsors and which has run more than 500 courses, for more than 5,000 teachers.

Green iguanas (Iguana iguana) are not native to the U.S. but were brought to Florida in the 1960s, where they have, for the most part, flourishedexcept, that is, when temperatures have dropped below 50 degrees F (10 degrees C). These chilly conditions can cause a cold shock in the lizards. And because the iguanas tend to sleep in trees, getting cold shocked can sometimes cause the animals to fall from the skies in an infamous Florida phenomenon.

Researchers have discovered the naturally mummified and skeletal remains of 61 cheetahs, which were hidden deep inside caves in northern Saudi Arabia for hundreds, and in some cases thousands, of years. The find indicates that these big cats roamed the Arabian Peninsula for millennia before they disappeared from the landscape between 49 and 188 years agoevidence that bolsters an effort to rewild the region with modern-day cheetahs, according to Ahmed Boug, general director of the National Center for Wildlife in Riyadh.

Critical Metals ( NASDAQ:CRML ) shares rocketed 32.6% higher yesterday after the company announced the first assay results from its 2025 drilling program at the Tanbreez rare-earth project in southern Greenland. The results confirmed additional high-grade intersections across the Fjord Deposit and Upper Fjord areas, building on prior drilling success. The stock has now surged approximately 158% year-to-date in 2026 as investors bet on the project's advancement toward a pilot plant launch targeted for May.

Amazon's data centers will reportedly utilize copper from a mine in Arizona that's leaching metal from ores using microorganisms, the Wall Street Journal reports. Amazon Web Services will be the first customer for Nuton Technologies, which developed the "bioleaching" technology. AWS will also be providing "cloud-based data and analytics support," helping to optimize Nuton's mining process. Nuton's bioleaching method uses naturally-occurring microorganisms to extract copper from low-grade ore that would otherwise be too expensive to mine,

An ailing astronaut returned to Earth with three others on Thursday, ending their space station mission more than a month early in NASA's first medical evacuation. SpaceX guided the capsule to a middle-of-the-night splashdown in the Pacific near San Diego, less than 11 hours after the astronauts exited the International Space Station. Their first stop was a hospital for an overnight stay.

A researchers' propensity for risky projects is passed down to their doctoral students - and stays with trainees after they leave the laboratory, according to an analysis of thousands of current and former PhD students and their mentors.

What we learned was something that hadn't been reported before," Mendales said.

If there's one date sky-gazers have marked in their diaries for 2026, it's the 12 August total solar eclipse. Set to be the year's most-watched celestial event, it takes place when the moon passes between the Earth and the sun, temporarily plunging the summer sky into darkness over Balearic beach clubs, Spanish city streets and Icelandic music festivals. So far, so dramatic, right? Just wait until you discover what it means for your star sign.

My father was a petroleum geologist. A lot of my childhood, he was gone, away on oil rigs in the Powder River Basin and remote parts of Wyoming, living in man camps long before cellphones. We had to wait days to talk to him. When he went into the nearest town to shower, he'd find a payphone and call us. I was always breathless with news.

It looked like the silvery blade of a knife. Peering through his goggles, diver Ted Judah had laid eyes on a deep-sea creature rarely encountered by humans. He and wife Linda were diving off McAbee Beach in Monterey County in late December when, near the surface, he spotted the undulating thing. It was some kind of ribbon fish, he wrote in a post on the Facebook group Monterey County Dive Reports. Kevin Lewand solved the mystery.

Signs of ageing accelerated when fish were exposed to the chemicals, according to the study, which could have implications for other organisms. Chemical safety regulations tend to focus on short-term exposure to high doses of pesticides and other chemicals, but the study focused on long-term exposure. Low doses of pesticides are widespread in the environment, so their effects should be studied and understood, the authors said.

Our sus­pi­cions have lit­tle to do with biol­o­gy, but rather, a cer­tain zesti­ness of expres­sion, an overem­phat­ic beak, a droll gleam in the eye. The Audubon Society's new­ly redesigned web­site abounds with trea­sure for those in either camp: Free high res down­loads of all 435 plates. Mp3s of each specimen's call. And vin­tage com­men­tary that effec­tive­ly splits the dif­fer­ence between sci­ence and the unin­ten­tion­al­ly humor­ous locu­tions of anoth­er age.

What is the most middle name in the United States? Erin Davis grew curious enough to find the answers in data. For females, the most middle names are Rae, Marie, and Mae. For males, the most middle names are Lee, Kumar, and Ray. The answers are straightforward, but finding the answers was more roundabout, because you can't just dig into the annual baby names dataset from the Social Security Administration. Instead, Davis used voter registration data, which comes with its own challenges.