2018年3月19日 星期一

Daily Bulletin for 03/19/2018 

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Hawking Left Behind New Multiverse Theory

Henry Bodkin, Telegraph

A final theory explaining how mankind might detect parallel universes was completed by Stephen Hawking shortly before he died, it has emerged.Colleagues have revealed the renowned theoretical physicist's final academic work was to set out the groundbreaking mathematics needed for a spacecraft to find traces of multiple big bangs.

We'll Never Know How Everything Began

Ross Pomeroy, RealClearScience

Roughly 13.8 billion years ago, the Universe as we know it expanded from an infinitely hot and dense singularity in space and time, first in a furious torrent of rapid cosmic inflation for a fraction of a second, and then in the more calm manner we see today gradual, yet accelerating expansion fueled by dark energy.

Climate and Disease Doomed the Roman Empire

Madeline Ostrander, Undark

Are We Rome? asked the author Cullen Murphy a decade ago, in a provocatively titled book that compared the 21st-century United States with the final days of the Roman Empire. Lately there's been no shortage of Cassandras who emphatically answer yes.

Trump is Serious About Creating a Space Force

Sandra Erwin, Space.com

After President Trump told Marines in California that he believed the U.S. military should have a space force, there was confusion. Was he serious? Was it an off-the-cuff riff? And why would he endorse an idea adamantly opposed by his own Defense Department? The president apparently was not joking.

More Evidence Essential Oils Make Male Breasts Develop

BBC News

A suspected link between abnormal breast growth in young boys and the use of lavender and tea tree oils has been given new weight, after a study found eight chemicals contained in the oils interfere with hormones.Gynaecomastia is rare, and there is often no obvious cause.

The Selective Skepticism of Lynne McTaggart

Neuroskeptic, Discover

Lynne McTaggart is an author and leading alternative health proponent who was the foil for my first ever Neuroskeptic post, nearly 10 years ago. Ever since then I have occasionally been following McTaggart's output.

Woman Dies After Bee Sting Acupuncture

Andrew Masterson, Cosmos

A woman in Spain has achieved the sad distinction of becoming the first person known to have died as a consequence of undergoing acupuncture using bees.The death is reported in the Journal of Investigational Allerology and Clinical Immunology, and raises questions about the safety of an increasingly popular field of alternative medicine, known as apitherapy.

There Isn't Actually a 'Reproducibility Crisis' in Science

Daniele Fanelli, PNAS

Is there a reproducibility crisis in science? Many seem to believe so. In a recent survey by the journal Nature, for example, around 90% of respondents agreed that there is a slight or significant crisis, and between 40% and 70% agreed that selective reporting, fraud, and pressures to publish always or often contribute to irreproducible research (1).

My Experience as Stephen Hawking's Student

Marika Taylor, The Conversation

Like many students of my generation, Stephen Hawking had already had enormous influence on me long before we ever met. When I was hesitating about my A-level choices, it was his book A Brief History of Time that convinced me to continue with physical sciences. In 1994, Hawking and mathematical physicist Roger Penrose gave a series of inspiring lectures about cosmology in Cambridge.

Getting Past the Bad Blood of Theranos

Seema Singh Bhan & Lauren Leiman, Stat

This week's news that the Securities and Exchange Commission charged Theranos and its CEO with fraud put the troubles of the company back into the spotlight. For those of us in the field of liquid biopsy, Theranos has cast a long and persistent shadow on what's clearly one of the most promising areas in cancer care using blood tests to improve detection, diagnosis, and treatment and, more broadly, advancing the reality of precision medicine in cancer.

Why Can't Everyone Do the 'Asian Squat'?

Sarah Zhang, The Atlantic

Among the more practical advice that can be offered to international travelers is wisdom of the bathroom. So let me say, as someone who recently returned from China, that you should be prepared to one, carry your own toilet paper and two, practice your squat.I do not mean those goofy chairless sits you see at the gym. No, toned glutes will not save you here. I mean the deep squat, where you plop your butt down as far as it can go while staying aloft and balanced on the heels.

How to Maintain Sexual Desire

Ross Pomeroy, RealClearScience

Maintaining sexual desire the drive to engage in sexual activity between partners is often integral to a successful, long-term monogamous relationship, but frequently left unspoken is how difficult this can be.Behind closed doors, counselors help couples deal with desire problems all the time, so it's high time to bring this discussion out into the open. A new systematic review published to The Journal of Sex Research does just that.

Hawking's Greatest Discovery Revolutionized Black Holes

Ethan Siegel, Forbes

In 1915, Albert Einstein published his General theory of Relativity, replacing our old Newtonian worldview with a unified concept of spacetime. On one side of Einstein's equations, the matter and energy in the Universe told spacetime how to curve; on the other side, the curved fabric of spacetime told matter and energy how to move.

No Scientist Wants to Be the Next 'BICEP2'

Andrew Grant, Physics Today

On 28 February we learned that an RF telescope isolated from the electromagnetic clamor of civilization had detected a signal with enormous implications. After years of painstaking analysis to filter out noise from the atmosphere, the galaxy, and technology, researchers concluded that the faint residual radiation hails from the dawn of the universe.

Comets and Asteroids Shower Mars with Organics

Jake Parks, Astronomy

For decades, astronomers suspected that Mars might be teeming with organics, which are carbon-based molecules like proteins, carbohydrates, and nucleic acids. However, it wasn't until 2015 that the Mars Curiosity rover uncovered the first evidence showing these life-supporting compounds were not only present, but also likely scattered all over the Red Planet.

Can We Actually Colonize Mars?

Allison Eck, PBS NOVA

Amidst rising global nuclear tensions, SpaceX and Tesla founder Elon Musk is calling for drastic action. He wants humans to colonize Marsstat.An MIT team designed the Redwood Forest, a series of forest habitats inside open, public domes.It's important to get a self-sustaining base on Mars because it's far enough away from Earth that [in the event of a war] it's more likely to survive than a moon base, Musk said at the annual South by Southwest (SXSW) conference in Austin, Texas last Sunday.

Physicists Are Building Miniature Universes

Katia Moskvitch, Wired

Silke Weinfurtner is trying to build the universe from scratch. In a physics lab at the University of Nottinghamclose to the Sherwood forest of legendary English outlaw Robin Hoodshe and her colleagues will work with a huge superconducting coil magnet, 1 meter across.
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