Ruthenium-100, in particular, would have made it into the core during Earth’s formation. Then, later in the planet’s history, a swarm of meteors bombarded the surface. Based on meteorite samples, this added various other isotopes of ruthenium to the crust and mantle. With no more liquid iron precipitating downward, these other isotopes couldn’t reach the… Continue reading Earth’s Core Appears To Be Leaking Up and Out of Earth’s Surface
Tag: Quantum Stuff
The Creepy Calculus of Measuring Death Risk
People are generally bad at assessing probabilities. That’s why we have irrational fears and why we overestimate our odds of winning the lottery. Whenever I have to travel by plane, for example, my palms sweat, my heart races and my thoughts take a gloomy turn. I should be much more worried when I get on… Continue reading The Creepy Calculus of Measuring Death Risk
What FDA’s Planned Limits on COVID Vaccinations Mean for Health
Larry Saltzman has blood cancer. He’s also a retired doctor, so he knows getting covid-19 could be dangerous for him — his underlying illness puts him at high risk of serious complications and death. To avoid getting sick, he stays away from large gatherings, and he’s comforted knowing healthy people who get boosters protect him… Continue reading What FDA’s Planned Limits on COVID Vaccinations Mean for Health
NOAA Says It’s Ready for Hurricane Season. Weather Experts Are Worried
CLIMATEWIRE | The National Oceanic and Atmospheric Administration insists it’s ready for the above-average hurricane season that meteorologists expect this summer. But scientists across the country are sounding the alarm about personnel shortages and budget cuts, which they say could strain the agency’s resources and risk burnout among its staff. The tension was on display… Continue reading NOAA Says It’s Ready for Hurricane Season. Weather Experts Are Worried
New Method Is the Fastest Way To Find the Best Routes
If you want to solve a tricky problem, it often helps to get organized. You might, for example, break the problem into pieces and tackle the easiest pieces first. But this kind of sorting has a cost. You may end up spending too much time putting the pieces in order. This dilemma is especially relevant… Continue reading New Method Is the Fastest Way To Find the Best Routes
How Can Math Protect Our Data?
Every time data travels — from smartphones to the cloud, or across the vacuum of space — it relies on a silent but vigilant guardian in the form of error-correcting codes. These codes, baked into nearly every digital system, are designed to detect and repair any errors that noise, interference or cosmic rays might inflict.… Continue reading How Can Math Protect Our Data?
‘It’s a Mess’: A Brain-Bending Trip to Quantum Theory’s 100th Birthday Party
Those Who Don’t Know The evening before Fuchs and I had lunch, he had given the first official physics talk of the conference, a lightning review of QBism and a report on some conjectures in number theory that QBist thinking had helped him make recent progress on. His closing words at the end of the… Continue reading ‘It’s a Mess’: A Brain-Bending Trip to Quantum Theory’s 100th Birthday Party
These Contacts Let You See Infrared Light—Even with Your Eyes Closed
New Contacts Let You See Infrared Light—Even with Your Eyes Closed Straight out of science fiction, these contact lenses convert infrared light into visible light that humans can see By Elizabeth Gibney & Nature magazine People who tested a new type of designer contact lens could see flashing infrared signals from a light source. Yuqian… Continue reading These Contacts Let You See Infrared Light—Even with Your Eyes Closed
Why Did The Universe Begin?
Most cosmologists agree that our universe had a beginning. But the finer details about the Big Bang remain a mystery. A history of everything would explain all, or so theoretical physicists hoped. In his final years, Stephen Hawking working with Thomas Hertog proposed a striking idea: The laws of physics were not precisely determined before… Continue reading Why Did The Universe Begin?
Quantum Scientists Have Built a New Math of Cryptography
Hard problems are usually not a welcome sight. But cryptographers love them. That’s because certain hard math problems underpin the security of modern encryption. Any clever trick for solving them will doom most forms of cryptography. Several years ago, researchers found a radically new approach to encryption that lacks this potential weak spot. The approach… Continue reading Quantum Scientists Have Built a New Math of Cryptography