Scientists claim they have evidence that explains why lifestyle changes known to be good for you — low-fat diets, exercise, reducing stress — can lengthen your life.
Based on a small, exploratory study, researchers say these good habits work by preventing chromosomes in our cells from unraveling. Basically, they assert that healthy living can reverse the effects of aging at a genetic level.
A bubble in space: Abell 39 marks the death of a star like the sun. Wind from the aging central star pushes into the surrounding interstellar gas, building up a dense shell that glows blue in this image. After 36 years of travel, the Voyager spacecraft is just now reaching the edge of the sun's own wind-blown bubble.
An Iraqi civilian walks through the vault of the National Museum in Baghdad, Iraq, on April 12, 2003. Looters opened the museum vault, went on a rampage breaking ancient artifacts stored there by museum authorities before the war started.
Credit Jerome Delay / AP
I'm going to tell two stories here, two very different stories. One's about bad guys hurting good guys that made me think the world is going to hell; the other is about good guys outfoxing bad guys and made me smile — made me think there's hope, always hope. I found them in different books.
Scientists are reporting an advance in the science of aging and maybe even a clue how to reverse some of aging's effects. They have evidence that lifestyle changes already known to be good for you, like healthy diet, exercise, reducing stress may prevent the chromosomes in our cells from unraveling.
NPR's Richard Knox reports that it's all about little caps on our chromosomes called telomeres.
How often do whales clean their ears? Well, never. And so, year after year, their ear wax builds up, layer upon layer. According to a study published Monday, these columns of ear wax contain a record of chemical pollution in the oceans.
The study used the ear wax extracted from the carcass of a blue whale that washed ashore on a California beach back in 2007. Scientists at the Santa Barbara Museum of Natural History collected the wax from inside the skull of the dead whale and preserved it. The column of wax was almost a foot long.
From the standpoint of global warming, burning natural gas can be better than burning coal, a study published this week suggests.
This is a contentious issue among people who are opposed to the natural gas drilling practice known as fracking. That technique involves injecting water, sand and chemicals into wells to release far more gas than conventional drilling can. Opponents of fracking have been concerned not only about local environmental issues, but also about the potential for methane leaks to make global warming worse.
A 60-foot section of pipe is lowered into a trench during construction of the Gulf Coast Pipeline in Prague, Okla., in March. The Gulf Coast Pipeline, a 485-mile crude oil line, is part of the Keystone XL project and will run from Cushing, Okla. to Nederland, Texas. Although this southern stretch of the pipeline is nearly finished, the northern stretch is still under study.
Five years ago this week, a Canadian company proposed building a pipeline to send heavy crude oil from Alberta to U.S. refineries. Although the Obama administration's answer on the Keystone XL pipeline is not expected anytime soon, politicians in Washington and Canada are ramping up the pressure for the project, while environmentalists are pushing hard against it.
The surface tower at a drill site, under construction during blistering Antarctic winds. Data from instruments, deployed through 450 meters of ice, is transmitted from the tower by satellite back to the Naval Postgraduate School.
Scientists watching Antarctica's Pine Island Glacier from space have noticed with some alarm that it has been surging toward the sea.
If it were to melt entirely, global sea levels would rise by several feet.
The glacier is really, really remote. It's 1,800 miles from McMurdo, the U.S. base station in Antarctica, so just getting there is a challenge. Scientists have rarely been able to get out to the glacier to make direct measurements.