Originally published on Fri February 8, 2013 1:50 pm
Before they end up filleted and sautéed on your dinner plate, salmon lead some pretty extraordinary, globe-trotting lives.
After hatching in a freshwater stream, young salmon make a break for the ocean, where they hang out for years, covering thousands of miles before deciding its time to settle down and lay eggs in their natal stream.
So how do these fish find their way back to their home river?
Some 66 million years ago, about 75 percent of species on Earth disappeared. It wasn't just dinosaurs but most large mammals, fish, birds and plankton. Scientists have known this for a long time just from looking at the fossil record. If you dig deep enough, you find lots of dinosaur bones. And then a few layers up, they're gone.
But scientists couldn't figure out exactly what had caused this phenomenon. Of course, there were lots of theories.
A worker makes a cut in the side of a sandstone block at the Cleveland Quarries facility in Vermilion, Ohio, earlier this month. The legal limit on the amount of silica that workers can inhale was set decades ago.
Credit Ty Wright / Bloomberg via Getty Images
An employee uses a wet saw to cut a slab of sandstone at a Lang Stone Co. facility in Columbus, Ohio, in January. Using water while cutting helps keep dust out of the air.
More than 400 guns, including these three, were turned in during a Dallas gun buyback program in January. But determining the effectiveness of such programs is difficult due to limits on gun-related research.
Originally published on Mon February 11, 2013 3:36 pm
Soup comes in many variations — chicken noodle, creamy tomato, potato and leek, to name a few. But through much of human history, soup was much simpler, requiring nothing more than boiling a haunch of meat or other chunk of food in water to create a warm, nourishing broth.
Have you ever spent a couple of hours working on a craft project — or a presentation for work — and then fallen in love with what you've accomplished? Do the colors you've picked for your PowerPoint background pop so beautifully that you just have to sit back and admire your own genius?
If so, get in line: You're the latest person to fall victim to the Ikea Effect.
Although federal data show that fewer Medicare beneficiaries are dying in hospitals that doesn't mean they're getting a lot less medical care in their final days, new research suggests.
Even as deaths in acute-care hospitals declined between 2000 and 2009, the use of intensive care units in the final 30 days of life increased, as did short-term hospice use. The rate of changes to care for these patients, such as transfers within the last three days of life, also increased.
Originally published on Wed February 6, 2013 9:39 am
Guys, it may be time to get off the couch and hit the treadmill — especially if you want to have kids.
Okay, we all know that exercise is good for us. It can reduce the risk of obesity, diabetes and heart disease, to name a few benefits. Now researchers say physical activity may also help keep sperm healthy and happy.
Movies like The Shining frighten most of us, but some brain-damaged people feel no fear when they watch a scary film. However, an unseen threat — air with a high level of carbon dioxide — produces a surprising result.
Credit Corey Feinstein / Iowa Neurological Patient Registry, University of Iowa, Courtesy of Nature
In these brain scans, amygdala damage can be seen in three patients (known as SM, AM and BG) with Urbach-Wiethe disease. See the dark spots within the areas circled in red. A healthy person is shown (left) for comparison.
Barrington Irving , a 23-year-old Jamaican-born pilot, at a news conference at Opa-locka Airport Wednesday, June 27, 2007, ending a three-month journey he said would make him the youngest person to fly around the world alone.
Credit Alan Diaz / AP
Irving returned to the Miami-area city he left March 23, 2007 in a Columbia 400 built of donated parts. He was optimistic his 27,000-mile continent-hopping trip aboard the "Inspiration" would live up to the plane's name and motivate young people _ especially minorities.
This Black History Month, Tell Me More is taking a look at African Americans in the STEM fields (science, technology, engineering and math) who are inspiring future generations.
Today, Barrington Irving shares how his sky high dreams became a reality. A chance encounter in his parents' bookstore put him on a path that would make him the youngest person and first African American to fly solo around the world.