The Cold War Redux
How did communism replace terrorism on the list of things Americans fear most and what's behind Glenn Beck's reawakening of the socialist ghost?
Over the summer two stars of the American right had a friendly argument about who poses the greatest threat to the United States. Fox News host Bill O’Reilly went with the conventional wisdom: al-Qaida. During the Bush administration, it was the clash of cultures that organised the way American conservatives saw the world. When they worried about issues like illegal immigration, what they were afraid of was al-Qaida operatives mingling among the future valet parkers of Chicago and meatpackers of Iowa. But O’Reilly’s new colleague and ratings rival, Glenn Beck, had a more surprising answer: it’s not the jihadists who are trying to destroy our country, it’s the communists.
What can 3D printing do for medicine? The "sky is the limit," says Northwell Health researcher Dr. Todd Goldstein.
- Medical professionals are currently using 3D printers to create prosthetics and patient-specific organ models that doctors can use to prepare for surgery.
- Eventually, scientists hope to print patient-specific organs that can be transplanted safely into the human body.
- Northwell Health, New York State's largest health care provider, is pioneering 3D printing in medicine in three key ways.
It's a "canary in the coalmine," said one climate scientist.
- A team of researchers discovered that permafrost in Northern Canada is melting at unusually fast rates.
- This could causes dangerous and costly erosion, and it's likely speeding up climate change because thawing permafrost releases heat-trapping gasses into the atmosphere.
- This week, Canada's House of Commons declared a national climate emergency.
One of Stephen Hawking's predictions seems to have been borne out in a man-made "black hole".
- Stephen Hawking predicted virtual particles splitting in two from the gravitational pull of black holes.
- Black holes, he also said, would eventually evaporate due to the absorption of negatively charged virtual particles.
- A scientist has built a black hole analogue based on sound instead of light.
Not every part of a satellite burns up in reentry. Considering the growing number of satellites in orbital space, that's a big problem.
- Earth's orbital space is getting more crowded by the day.
- The more satellites and space junk we put into orbit, the greater a risk that there could be a collision.
- Not all materials burn up during reentry; that's why scientists need to stress test satellite parts to ensure that they won't become deadly falling objects.
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