science
3-plus hours daily screen time linked to diabetes risk factors for...
Daily screen time of three or more hours is linked to several risk factors associated with the development of diabetes in children, finds a...
Early Earth had a hazy, methane-filled atmosphere
A new research paper describes a period more than 2.4 billion years ago, when Earth's atmosphere was filled with a thick, methane-rich haze much...
Explaining a ‘once-in-a-billion-year event’: A perfect storm of fire and ice...
About 700 million years ago, runaway glaciers covered the entire planet in ice. Harvard researchers modeled the conditions that may have led to this...
Depression doubles long-term risk of death after heart disease diagnosis, new...
Depression is the strongest predictor of death in the first decade following a diagnosis of coronary heart disease, according to a new study by...
For hospitalized patients, spending more on care doesn’t buy better health
Hospitalized patients treated by physicians who order more or more expensive tests and procedures are just as likely to be readmitted or to die...
Yes, she’s smiling: Mona Lisa’s facial expression
It is perhaps the world's most famous painting: Leonardo da Vinci's Mona Lisa. The ambiguous facial expression of Mona Lisa was long thought to...
Radiation from nearby galaxies helped fuel first monster black holes
The massive black hole shown at left in this drawing is able to rapidly grow as intense radiation from a galaxy nearby shuts down...
Enzyme-free Krebs cycle may have been key step in origin of...
A set of biochemical processes crucial to cellular life on Earth could have originated in chemical reactions taking place on the early Earth four...
Visualizing the genome: First 3-D structures of active DNA created
Intact genome from one particular mouse embryonic stem cell. Each of the cell's 20 chromosomes is colored differently.Credit: University of Cambridge and MRC Laboratory...
Never before seen images of early stage Alzheimer’s disease
Images that predate the formation of toxic clumps of beta-amyloid, the protein believed to be at the root of Alzheimer’s disease, have now been...
Dramatic improvement in surface finishing of 3-D printing
Visual comparison of printed surface before smoothing (1), with smoothing by conventional methods (2) and by 3D-CMF (3). CMF result (a-3) is more uniform...
