These are cardiomyocytes, green, proliferating in a mouse heart after gel injection.
Credit: University of Pennsylvania
In mammals, including humans, the cells that contract the heart muscle and enable it to beat do not regenerate after injury. After a heart attack,...
Nelson Sepulveda is a nanotechnology researcher and associate professor of engineering at Michigan State University.
Credit: Michigan State University
A paper-thin, flexible device created at Michigan State University not only can generate energy from human motion, it can act as a...
The research team camped in these tents near the drill site in Antarctica.
Credit: Reed Scherer
Lurking in a lake half a mile beneath Antarctica's icy surface, methane-eating microbes may mitigate the release of this greenhouse gas into the atmosphere as...
Enjoying nature. Credit: The University of Queensland
People who visit parks for 30 minutes or more each week are much less likely to have high blood pressure or poor mental health than those who don't, according to new research by...
The naked HIV capsid, left, would be quickly detected and eliminated from the cell, but a host protein, cyclophilin A, in red in the image on the right, binds to the capsid and enables it to transit through the...
Female mountain gorilla. The ancestors of simian primates -- such as gorillas, gibbons and tamarins -- were among the first to give up nocturnal activity altogether.
Credit: © F.C.G. / Fotolia
Mammals only started being active in the daytime after non-avian...
Antarctica.
Credit: Dave Pape, Public Domain
It's official: East Antarctica is pushing West Antarctica around.
Now that West Antarctica is losing weight--that is, billions of tons of ice per year--its softer mantle rock is being nudged westward by the harder mantle...
Models used by the Intergovernmental Panel on Climate Change may be underestimating future warming.
Credit: © f9photos / Fotolia
The climate models that project greater amounts of warming this century are the ones that best align with observations of the current...
The flexible tissue scaffold, shown here emerging from a glass pipette with a tip one millimetre wide, unfolds itself after injection into the body. This could enable surgeons to use minimally invasive techniques, which reduce recovery time, scarring and...
A hidden or 'choked' jet (white) powering a radio-emitting 'cocoon' (pink) is the best explanation for the radio waves, gamma rays and X-rays the astronomers observed.
Credit: NRAO/AUI/NSF: D. Berr
Three months of observations with the National Science Foundation's Karl G....
A mosaic of images from the navigation cameras on the NASA Curiosity rover shows "halos" of lighter-toned bedrock around fractures. These halos comprise high concentrations of silica and indicate that liquid groundwater flowed through the rocks in Gale crater...
