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At Harvard Forest, doomed eastern hemlocks found to further future generations
Small, newly regrown hemlock trees under larger old-growth forest

At Harvard Forest, doomed eastern hemlocks found to further future generations

Sixteen years ago, an invasive pest called the woolly adelgid arrived at Harvard Forest and slowly began to devastate its the eastern hemlocks — as they had done in forcce elsewhere. Since then, Harvard Forest scientists have begun to study how to manage the demise of its so-called foundation species.

How to build an evolutionary trap for viruses
M.D./Ph.D. student Vaibhav Mohanty, at left, with Eugene Shakhnovich, Roy G. Gordon Professor of Chemistry, used a chalkboard to illustrate their fitness landscape design (FLD).

How to build an evolutionary trap for viruses

Two Harvard scientists describe a way to engineer the evolutionary landscape that viruses experience, pushing them away from dangerous variants and into evolutionary dead ends.

What sprawling light pollution does to fireflies
Fireflies in a field

What sprawling light pollution does to fireflies

As the sun sinks below the horizon, two scientists perch quietly beside a darkening field and wait for flashes of light. They have traveled far outside the city in search of research sites, because they study a group of creatures that have been driven to the margins of human settlements: fireflies.

Harvard study predicts most suicide attempts a week in advance
Psychology professor Matthew Nock seated on a gray couch in front of a red wall

Harvard study predicts most suicide attempts a week in advance

Researcher Matthew Nock pioneered the technique of using smartphone technology to survey high-risk adults and adolescents in real time. In a new study, Nock and his team report using the technology to predict 75 percent of suicide attempts in the week before they occurred.

Mapping source of volcanic activity deep within the Earth
Geophysicist Xiyuan Bao behind the wheel of his car

Mapping source of volcanic activity deep within the Earth

Upon moving to Cambridge, geophysicist Xiyuan Bao often relied on navigation software to find his way through the unfamiliar network of roads. He realized the same technology could help him find something else: a solution to a mystery deep within the Earth.

Measuring the mental toll of a rising sea
The coastline of the Okun Alfa neighborhood, where the sea reaches directly up to the steps of a home

Measuring the mental toll of a rising sea

Coastal erosion, worsened by climate change, is consuming West African communities on the Gulf of Guinea. A team led by the Salata Institute’s Emmanuel Akyeampong surveyed 450 residents on the mental health impacts of the destruction.

Jill Lepore on history, dangers of ‘the artificial state’
Black-and-white photo of Professor Jill Lepore seated outdoors at a table with her dog

Jill Lepore on history, dangers of ‘the artificial state’

How did we cede control of our democracy to the machines, and can we get it back? These are the questions Jill Lepore, David Woods Kemper ’41 Professor of American History, asks in her latest book.