Is time travel a fact or is it just science fiction? Thanks to time dilation and Einstein’s theory of relativity, we know that time travel can and actually does happen, albeit only in extremely tiny increments at the speeds and distances we can travel in space. If you add up the accumulated speed cosmonaut Sergei Krivalev has traveled in space – the most of any human with a total time spent in orbit of 803 days 9 hours and 39 minutes – he has actually time-traveled into his own future by 0.02 seconds.
Biology & Chemistry
UCLA scientist developed biological clock able to measure age of most human tissues. Study finds, using a previously undiscovered time-keeping mechanism in the human body, women’s breast tissue ages faster than the rest of the body.
They’ve finally found a fossilized mosquito full of prehistoric blood! So a real Jurassic Park is right around the corner, right? Trace explains what exactly this discovery means, and if this means you’ll be visiting Isla Nublar any time soon.
Hank profiles this year’s Nobel laureates in science, whose achievements have helped us understand questions as small as how our cells transport materials, and as big as why matter exists at all.
AFP Photo / Pascal Guyot US scientists have discovered an internal clock in our DNA that could measure the biological age of organs or cancer cells while helping researchers discover ways to slow down the aging process. The internal mechanism shows that different parts of our body age faster or slower, according to a study published […]
Study finds women’s breast tissue ages faster than the rest of the body By Elaine Schmidt Everyone grows older, but scientists don’t really understand why. Now a UCLA study has uncovered a biological clock embedded in our genomes that may shed light on why our bodies age and how we can slow the process. Published […]
A molecule is nearly all empty space, apart from the extremely dense nuclei of its atoms and the clouds of electrons that bond them together. When that molecule forms, it arranges itself to maximize attraction of opposite charges and minimize repulsion of unlike. George Zaidan and Charles Morton shape our image of molecules.
Atoms can (and do) bond constantly; it’s how they form molecules. Sometimes, in an atomic tug-of-war, one atom pulls electrons from another, forming an ionic bond. Atoms can also play nicely and share electrons in a covalent bond. From simple oxygen to complex human chromosome 13, George Zaidan and Charles Morton break down the humble chemical bond.
Nuclear fusion is AMAZING. It’s set to revolutionize the way we power almost everything on the planet. And scientists are closer than ever to achieving a sustained fusion reaction. Trace tells you just how close these pioneering scientists really are.
The tiny atoms that make up our world are made up of even tinier protons, neutrons and electrons. Though the number of protons determines an atom’s identity, it’s the electrons — specifically, their exact location outside the nucleus — that particularly perplex scientists. George Zaidan and Charles Morton show how to make an educated guess of where those itty-bitty freewheeling electrons might be.
What happens when you don’t sleep? And why do we need to do it anyways? Hank explains the science of sleep: the cause, the benefits, and who holds the record for going without it!
The 5.5m carcass – which needed 16 people to bring it ashore – will be buried in sand before it is reconstructed for display. A marine biologist has made the discovery of a lifetime – the five-metre-long silvery carcass of the creature belived to be the origin of sea serpent legends. Jasmine Santana of the […]
by Bruce Goldman A brain region activated when people are asked to perform mathematical calculations in an experimental setting is similarly activated when they use numbers — or even imprecise quantitative terms, such as “more than”— in everyday conversation, according to a study by Stanford University School of Medicine scientists. Using a novel method, the researchers collected […]
Director of Nursing, Adeline Baker, recalls how Scamp first identified a dying patient. His vet thinks this event and the surrounding humans reactions to it produced positive reinforcement for such ‘one trial learning’. Some dogs are trained to detect changes in humans, such as the onset of seizures. Check out the amazing way AJ alerts his owner Tony.