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offers new insights into the contributions made by the fungus to plant degradation

identification of enzymes capable of degrading lignocelluloses could also be a boon for the biofuels industry. Biofuel companies already use enzyme blends to break down starches from plant biomass, most commonly corn, into sugars to be fermented into ethanol. But the enzymes currently available can’t break down tough-to-degrade molecules such as lignocelluloses on an industrial scale.

idea is that the genes coding for these enzymes in the fungus gardens of leafcutter ants can be mass-produced in the lab by inserting them into E. coli or yeast, then used to break down feedstocks that require less land, fewer resources, and that don’t compete with food crops. “This is a highly evolved system, so the hypothesis is that the enzymes would be highly tuned to break down plant biomass,”

researchers will also need to take into account the role of bacteria. “It could be that bacteria are producing some enzymes that enhance the efficacy of the fungal enzymes,” says Aylward. “Integrating the bacterial component is likely to be important, because the synergism we see with leafcutter gardens is on the level of the entire symbiosis.”

the faceless communication social media creates, the linked distances between people, both provokes and mitigates the inherent capacity for monstrosity.

The Gyges effect, the well-noted disinhibition created by communications over the distances of the Internet, in which all speech and image are muted and at arm’s reach, produces an inevitable reaction — the desire for impact at any cost, the desire to reach through the screen, to make somebody feel something, anything. A simple comment can so easily be ignored. Rape threat? Not so much. Or, as Mr. Nunn so succinctly put it on Twitter: “If you can’t threaten to rape a celebrity, what is the point in having them?”

The challenge of our moment is that the face has been at the root of justice and ethics for 2,000 years.

The precondition of any trial, of any attempt to reconcile competing claims, is that the victim and the accused look each other in the face.

For the great French-Jewish philosopher Emmanuel Levinas, the encounter with another’s face was the origin of identity — the reality of the other preceding the formation of the self. The face is the substance, not just the reflection, of the infinity of another person. And from the infinity of the face comes the sense of inevitable obligation, the possibility of discourse, the origin of the ethical impulse.

“Through imitation and mimicry, we are able to feel what other people feel. By being able to feel what other people feel, we are also able to respond compassionately to other people’s emotional states.” The face is the key to the sense of intersubjectivity, linking mimicry and empathy through mirror neurons — the brain mechanism that creates imitation even in nonhuman primates.

Inability to see a face is, in the most direct way, inability to recognize shared humanity with another. In a metastudy of antisocial populations, the inability to sense the emotions on other people’s faces was a key correlation. There is “a consistent, robust link between antisocial behavior and impaired recognition of fearful facial affect. Relative to comparison groups, antisocial populations showed significant impairments in recognizing fearful, sad and surprised expressions.”

Without a face, the self can form only with the rejection of all otherness, with a generalized, all-purpose contempt — a contempt that is so vacuous because it is so vague, and so ferocious because it is so vacuous. A world stripped of faces is a world stripped, not merely of ethics, but of the biological and cultural foundations of ethics.

The spirit of facelessness is coming to define the 21st. Facelessness is not a trend; it is a social phase we are entering that we have not yet figured out how to navigate.

the flight back to the face takes on new urgency. Google recently reported that on Android alone, which has more than a billion active users, people take 93 million selfies a day

Emojis are an explicit attempt to replicate the emotional context that facial expression provides. Intriguingly, emojis express emotion, often negative emotions, but you cannot troll with them.

But all these attempts to provide a digital face run counter to the main current of our era’s essential facelessness. The volume of digital threats appears to be too large for police forces to adequately deal with.

The more established wisdom about trolls, at this point, is to disengage. Obviously, in many cases, actual crimes are being committed, crimes that demand confrontation, by victims and by law enforcement officials, but in everyday digital life engaging with the trolls “is like trying to drown a vampire with your own blood,”

There is a third way, distinct from confrontation or avoidance: compassion

we need a new art of conversation for the new conversations we are having — and the first rule of that art must be to remember that we are talking to human beings: “Never say anything online that you wouldn’t say to somebody’s face.” But also: “Don’t listen to what people wouldn’t say to your face.”

The neurological research demonstrates that empathy, far from being an artificial construct of civilization, is integral to our biology.