The Boston Citgo sign, all 3,600 square LED feet of which has served as the backdrop to Red Sox games since 1965, is now officially a "pending landmark."

Spanish Surrealist Salvador Dalí spent much of the 1940s in the U.S., avoiding World War II and its aftermath. He was a well-known fixture on the art scene in Monterey, Calif. — and that's where the largest collection of Dalí's work on the West Coast is now open to the public.

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The middle of summer is when the surprises in publishing turn up. I'm talking about those quietly commanding books that publishers tend to put out now, because fall and winter are focused on big books by established authors. Which brings us to The Dream Life of Astronauts, by Patrick Ryan, a very funny and touching collection of nine short stories that take place in the 1960s and '70s around Cape Canaveral, Fla.

When the United Kingdom voted to leave the European Union last month, the seaside town of Port Talbot in Wales eagerly went along with the move. Brexit was approved by some 57 percent of the town's residents.

Now some of them are wondering if they made the wrong decision.

The June 23 Brexit vote has raised questions about the fate of the troubled Port Talbot Works, Britain's largest surviving steel plant — a huge, steam-belching facility that has long been the town's biggest employer.

Solar Impulse 2 has landed in Cairo, completing the penultimate leg of its attempt to circumnavigate the globe using only the power of the sun.

The trip over the Mediterranean included a breathtaking flyover of the Pyramids. Check it out:

President Obama is challenging Americans to have an honest and open-hearted conversation about race and law enforcement. But even as he sits down at the White House with police and civil rights activists, Obama is mindful of the limits of that approach.

"I've seen how inadequate words can be in bringing about lasting change," the president said Tuesday at a memorial service for five law officers killed last week in Dallas. "I've seen how inadequate my own words have been."

Mice watching Orson Welles movies may help scientists explain human consciousness.

At least that's one premise of the Allen Brain Observatory, which launched Wednesday and lets anyone with an Internet connection study a mouse brain as it responds to visual information.

The FBI says it is giving up on the D.B. Cooper investigation, 45 years after the mysterious hijacker parachuted into the night with $200,000 in a briefcase, becoming an instant folk figure.

"Following one of the longest and most exhaustive investigations in our history," the FBI's Ayn Dietrich-Williams said in a statement, "the FBI redirected resources allocated to the D.B. Cooper case in order to focus on other investigative priorities."

This is the first in a series of essays concerning our collective future. The goal is to bring forth some of the main issues humanity faces today, as we move forward to uncertain times. In an effort to be as thorough as possible, we will consider two kinds of threats: those due to natural disasters and those that are man-made. The idea is to expose some of the dangers and possible mechanisms that have been proposed to deal with these issues. My intention is not to offer a detailed analysis for each threat — but to invite reflection and, hopefully, action.


Is The Earth Alive? That Depends On Your Definition Of Life

Mar 6, 2013
Originally published on March 6, 2013 1:17 pm

As some of you may know, I spent last week at CERN, the European high-energy physics laboratory where the famous Higgs boson was discovered last July. Every time I go to CERN I feel a deep sense of reverence. Apart from quick visits over the years, I was there for three months in the late 1990s as a visiting scientist, doing work on early Universe physics, trying to figure out how to connect the Universe we see today with what may have happened in its infancy.

CERN was already famous at that time for many discoveries, including the trio of particles that confirmed that two of the four forces of Nature, the electromagnetic and the weak nuclear force, can be interpreted as a single force at high energies. Their names are not so sexy, W+, W-, and Z0 (the superscripts represent their electric charge in units of an electron charge), but these three bosons represent a triumph of human creativity, a beautiful example of how theory and experiment work together: they were predicted in the late 1960s to exist by a theory unifying the two forces and were subsequently discovered in 1983 at CERN's Super Proton Synchrotron, by then turned into a proton-antiproton collider.

Going to CERN is like stepping onto hallowed ground, a portal into a realm foreign to our everyday perception, where the invisible world of high-energy particles is made accessible to us, even if only through indirect data analysis.

It's all the more interesting, then, that the purpose of my visit was not particle physics but the origin of life.

A small group of scientists from different fields got together to discuss and review what is known about the origin of life and where the field is going. One of the organizers was none other than our own Stuart Kauffman, whom I expect will give his own version of the proceedings. There were physicists, evolutionary biologists, biochemists, Earth scientists, all areas of science that touch in one way or another the very complex scientific question of how inanimate matter became animated on our planet some 3.5 billion years ago — or earlier.

There are many parts to the question of the origin of life, starting with an understanding of what life is. Surprisingly, there isn't a universally agreed definition of life; different scientists think about life differently and consensus is not forthcoming. Some, like Carol Cleland, from the University of Colorado, and Christopher Chyba, from Princeton University, even argue that it may be best not to try to define life, as any definition would necessarily constrain our imagination; there may be some seemingly bizarre systems out there that may be living, even if in ways very distant from what we see around us.

I will occasionally revisit some of the open questions in these pages. Today, I want to specifically mention the work of one of our colleagues, Tim Lenton, from the University of Exeter.

Tim studies the evolution of the Earth from its earliest stages to today and into the future based on sophisticated modeling of how the environment couples with the planet as a whole. In particular, he is interested in how the presence of life influenced — or even determined — what kind of planet the Earth is.

Tim believes, quite correctly, that the history of our planet and of life on it are one and the same. Some of this amazing story is told in his book Revolutions That Made The Earth, written with collaborator Andrew Watson.

One afternoon, we took off for a run on trails outside CERN. It was a dark day ("not much sunlight coming through these clouds," said Tim); the ground was part snow, part mud. At one point, Tim asked: "Marcelo, what do you think of the Rare Earth hypothesis?"

Tim was referring to the book by Peter Ward and Donald Brownlee in which they argued that primitive life may be widespread in the Universe, but complex multicellular life is not. Intelligent life, if it exists elsewhere, would be exceedingly rare.

I answered that I am in complete agreement with their hypothesis and added that this makes us humans very relevant, an argument I presented in my book A Tear at the Edge of Creation. We matter because we are rare.

Tim's own work is a masterful display of the power of modeling to elucidate the coupling of life with the environment. Firmly based on data, he claims that we should look at Earth as a living thing, just as James Lovelock, his mentor, has argued in the Gaia Hypothesis.

At CERN, Tim told us that "you can pick up Earth's breathing from the CO2 captured by detectors spread around the planet, a rhythm that moves with night and day." What a staggeringly beautiful revelation.

Life regulates the stability of the atmosphere so that it can survive. It's not a purposeful directive, but one that resulted from millions of years of interactions between life and Earth's atmosphere; one cannot be seen without the other. Life and Earth are one.

I couldn't think of a more fitting scientific topic to be discussed in this most revered cathedral of reductionism.

It all starts with electrons, quarks and the Higgs boson. But even if all living entities are assemblies of such particles, life is much more than its parts. New laws are needed to describe how matter interacts to become ever more complex; from molecules to cells to organisms to minds, all coupled to their environment.

If life is to be understood, it will be from the confluence of many scientific minds.

You can keep up with more of what Marcelo is thinking on Facebook and Twitter: @mgleiser

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