Physical Science
Physical science is the study of the physical world around you. Learn about everything from electricity to magnetism in this section.
Bloodstains at Crime Scene Can Tell Age of Victim or Suspect
Scientists have developed a blood test that can give an approximate age of a person within an hour.
Scientists are using 3-D printers to make human corneas, an advancement that could end the perennial shortage of corneas from donors.
Our fingerprints serve to definitively identify us forever, right? But do they? How long do fingerprints remain usable as identification after we are dead?
Does your brain start to cramp at the thought of having to do math? Experts explain why some people have math anxiety and how they can overcome it.
Anti-aging scientist Aubrey de Grey, who does math problems for relaxation, just made major progress on the daunting Hadwiger-Nelson problem.
Scientists have a new lead on what gives some animals the ability to sense Earth's magnetic field.
Listen in as the guys from Stuff They Don't Want You to Know investigate the sonic weapons "attack" in Cuba.
English mathematician Benjamin Gompertz formulated the first natural law of the way we die.
The flick, the shake and the micromort are just three of the unusual measurements that scientists use.
The International Thermonuclear Experimental Reactor plant aims to demonstrate that nuclear fusion could be a viable source of power in the future.
It's a force of habit to shake spray canisters, but when it comes to canned air, that inclination could cause frostbite.
Nights on Earth are getting artificially brighter, bringing unintended consequences.
Why do we love looking at a perfectly stacked display of soup cans or six flower petals around a stamen? Our brains seem wired for it -- but why?
A new analysis of the ancient Indian Bakhshali manuscript suggests the numerical symbol zero, as we use it today, may be centuries older than previously believed.
Scientists have figured out why some objects stick more to each other. And it's a very cool trick.
If you're one of those people who chooses invisibility as your desired superpower, it could mean you have a dark side.
Ancient Babylonian Tablet May Show Early Trigonometry, But Some Experts Are Dubious
A reinterpretation of an ancient Babylonian tablet shows that trigonometry might be 1,000 years older than thought. But there's some disagreement.
The seriously ambitious experiment aims to understand the mysterious neutrino and maybe even figure out why matter won out over antimatter during the Big Bang.
Researchers have come up with the most precise determination of Planck's constant ever, making it possible to reframe the idea of what a kilogram even is.
Stanford University researchers for have for the first time observed the formation of a super-dense frozen water crystals called ice VII, which don't naturally exist on Earth.
Two physicists have worked out a mathematical model for time travel. Now we just need some heretofore unseen exotic matter to get traveling.
Fukushima Radiation Readings Are Extremely High … But Let's Not Freak Out
New data shows extremely high radiation levels inside one of the reactor containment vessels. Are post-tsunami radiation levels spiking? Not so fast …
DNA found at a crime scene doesn't automatically mean the person matching it is guilty, say researchers of new forensics guide.
Light-reflective glasses promise to foil CCTV cameras. Here's how.
Science is still working out exactly what makes frozen water so slippery, but there are a few intriguing theories.
