These images were taken of comet C/2013 A1 Siding Spring by NASA’s Mars Reconnaissance Orbiter on Oct. 19, 2014, during the comet’s close flyby of Mars and the spacecraft.
After many delays, Ken Sims is finally on ice—antarctic ice. He is studying the origins of ancient, frozen volcanic islands around Antarctica by analyzing their rocks. Dangers abound, but Ken is willing to brave them for science.
I am back in Antarctica to do what we could not do two years ago because of thin ice, and were not able to do last year because of the “partial” government shut down, which is to sample the volcanic sea cliffs of Mt. Bird at Lewis Bay on Ross Island.
This year we flew down even earlier in the austral spring to accomplish our mission. After a few delays because of bad weather, John Catto and I flew out to Lewis Bay and found that the sea ice was thick enough to land a helicopter on safely. So, we were finally able to sample the lava flows that make up these sea cliffs; the samples which my colleagues and I have now coveted for two years.
Collecting these samples was somewhat sketchy, requiring considerable caution and some luck. The transition between the sea ice —> Read More Here
LONDON (Reuters) – A Bulgarian man who was paralyzed from the chest down in a knife attack can now walk with the aid of a frame after receiving pioneering transplant treatment using cells from his nose.
Every week, embark with host Boyd Matson on an exploration of the latest discoveries and interviews with some of the most fascinating people on the planet, on National Geographic Weekend.
Please check listings near you to find the best way to listen to National Geographic Weekend on radio, or listen below!
– Following the discovery of a complete skeleton for the 50-foot long spinosaurus, the largest meat-eater to ever walk the earth. Paul Sereno puts what they know about the dinosaur into context. Sereno helped discover and reassemble the large reptile, and explains why the dinosaur had the 7-foot tall sail on its back. He explains that the spinosaurus lived 100 million years ago, and while it’s larger than the famed T. rex, they never would have encountered each other. Sereno also explains that spinosaurus dominated the landscape at a time when there were four other predators that nearly equals it in size.
– One of the toughest challenges that faces developing nations is —> Read More Here
Tiny species found a decade ago in Indonesia caused big rethink —> Read More Here
BRASILIA, Brazil, Oct. 20 (UPI) — According to data from the Brazilian nonprofit Imazon, deforestation in the Amazon has increased 190 percent compared to last year. —> Read More Here
When the young woman in the seat next to me asked the flight attendant for a glass of cabernet, I took it as a sign that projectile vomiting and explosive diarrhea would not be part of my trip from PHL to LAX. I also took it as a reminder that the Ebola irrationality I’ve slammed in others is not as foreign to me as I’d like to believe.
I’d been in Philadelphia for a conference on science communication. Scientists, social scientists, doctors, journalists and kindred spirits had come together to examine how facts make their way, or don’t, to policy makers and to the public.
Should there be a tax on carbon to reduce greenhouse gases? How should we handle the conflict between parents who don’t want their kids vaccinated, and the public good of herd immunity? If you think that the quality of decisions like those depends on getting the most knowledge to the most people, then you believe what most scientists believe: it’s called the “knowledge deficit” model. Explain to people that 97 percent of scientists agree that humans cause global warming, and they’ll realize that the jury on climate change is not still out. Properly present the —> Read More Here
The odds are good that 2014 will become the warmest year in the books, fueled by record ocean warmth. —> Read More Here
NASA’s Mars Exploration Rover Opportunity caught an image of a celestial visitor — comet C/2013 A1 Siding Spring — as the comet approached near to Mars on Oct. 19, 2014.
Mars Exploration Rover Opportunity captured images of a comet passing much closer to Mars than any previous known comet flyby of Earth or Mars. The images of comet Siding Spring were taken against a backdrop of the pre-dawn Martian sky on Sunday (Oct. 19).