Christopher X J. Jensen
Professor, Pratt Institute

If sloths endure costs to maintain closed-loop agricultural systems, why can’t we?

Posted 05 Feb 2014 / 0

The New York Times “The Sloth’s Busy Inner Life” This is a great story about how paradoxical behaviors can be understood through appreciating mutualisms. If you don’t understand the benefits of algae to sloths and sloths to algae,  you can’t understand this behavior. But you also need to understand how sloths directly benefit moths and how Read More

A Minor Post, Adaptation, Articles, Behavior, Behavioral Ecology, Closed Loop Systems, Coevolution, Community Ecology, Composting, Mutualism, Predation, Quantifying Costs and Benefits, Tropical Forest

String Theory: should we care?

Posted 02 Feb 2014 / 0

On Being “Reimagining the Cosmos” I always find myself stuck on the fence when it comes to the confrontation between physics and philosophy (and by extension religion). This episode effectively captures my ambivalence. On the one hand, I like that Brian Greene really sticks to his guns on the “sensation of free will”. If there Read More

A Minor Post, Adaptation, Behavior, Belief, Consciousness, Emotion, Ethics, Evolutionary Psychology, Human Evolution, Human Uniqueness, Neuroscience, Philosophy, Physics, Psychological Adaptation, Psychology, Radio & Podcasts, Religion

Model evidence that third party punishment only makes sense in tight-knit groups

Posted 29 Jan 2014 / 0

Proceedings of the Royal Society B “High strength-of-ties and low mobility enable the evolution of third-party punishment“

A Minor Post, Altruism, Articles, Behavior, Evolutionary Modeling, Punishment, Reputation, Social Networks

Caterpillars weaponize nicotine

Posted 02 Jan 2014 / 0

The Economist “Caterpillars that blow nicotine at their enemy” I love the combination of genetic manipulation and “arena of death” wolf-spider gauntlet that led to these findings.

A Minor Post, Adaptation, Articles, Behavior, Behavioral Ecology, Host-Pathogen Evolution, Interactions, Parasitism, Predation, Resistance Evolution in Parasites

Taking risks for the data

Posted 25 Oct 2013 / 0

The cover story of November’s National Geographic is about the death of storm chaser Tim Samaras, who was killed along with two of his collaborators (including one of his sons) during a monster tornado outside Oklahoma City, Oklahoma. Samaras is one of many “explorers” supported by National Geographic, an organization that seems to be the Read More

A Major Post, Articles, Genetics, Human Evolution, Human Nature, Human Uniqueness, Play, Risk & Uncertainty

Writing and record-keeping as important tools in the evolution of large-scale human cooperation

Posted 25 Oct 2013 / 0

This View of Life “The Role Of Writing And Recordkeeping In The Cultural Evolution Of Human Cooperation” What is also so interesting about written language is that it is another means of defining a group: only those who are literate and can read the particular recorded language can fully benefit from the cooperation fostered by Read More

A Minor Post, Cooperation, Empathy, Group Selection, Multilevel Selection

Should we emulate the cooperative and conservative habits of the sloth?

Posted 19 Sep 2013 / 0

Inhabitat “The Biomimicry Manual: What Can Sloths Teach Us About Energy Efficiency?“

A Minor Post, Adaptation, Behavior, Behavioral Ecology, Coevolution, Green Design, Mutualism, Tropical Forest, Web

An anecdote that illustrates the tremendous power of human network reciprocity

Posted 13 Sep 2013 / 0

NPR Morning Edition StoryCorps “How One Man Continues To ‘Just Pass It On’” The story of this man’s life and how he has reacted to the kindness of a stranger nicely encapsulates the very powerful nature of human network reciprocity. Rather than focusing on “repaying the kindness”, Thomas Weller was charged to “pass it on”. Read More

A Minor Post, Behavior, Cultural Evolution, Evolutionary Psychology, Human Uniqueness, MSCI-463, The Evolution of Cooperation, Radio & Podcasts, Reciprocity, Social Networks, Social Norms

My review of “Origins of Altruism and Cooperation” is published in QRB

Posted 30 Aug 2013 / 0

I am excited to report that my review of Origins of Altruism and Cooperation was just published in the Quarterly Review of Biology. Although it requires some work to get through, this collection presents a really important counter-narrative to the prevailing attitude in evolutionary biology that altruism is simply self-interest in disguise. The book uses Read More

A Major Post, Altruism, Behavior, Books, Cooperation, Cultural Evolution, Empathy, Group Selection, Human Evolution, Human Uniqueness, Kin Selection, Multilevel Selection, My publications, Primatology, Reciprocity, Social Networks, Social Norms

Schadenfreude as an instinct born of being a social, hierarchical animal

Posted 23 Aug 2013 / 0

The Chronicle of Higher Education “On the Failures of Others“

A Minor Post, Competition, Emotion