Science & Tech

Seventeen teams of Harvard students toiled on campus during the last days of winter break, working to finish computer projects during the annual Hack Week sponsored by the Hack Harvard student group.

Harvard celebrates the 100th anniversary of a computational principle that was little noticed in its time, but that underlies all of modern science.

Record warmth in 2010 and 2012 resulted in similarly extraordinary spring flowering in the eastern United States — the earliest in the more than 150 years for which data is available— researchers at Harvard University, Boston University, and the University of Wisconsin have found.

Astronomers have identified a new structure in the Milky Way: a long tendril of dust and gas that they are calling a “bone.”

The quest for a twin Earth is heating up. Francois Fressin, of the Harvard-Smithsonian Center for Astrophysics (CfA), presented the new analysis of Kepler data that shows that about 17 percent of stars have an Earth-sized planet in an orbit closer than Mercury.

Students in the “Physics and Applied Physics Research Freshman Seminar” labored hard to improve on a model heat engine, continuing the work of a previous class.

In a question-and-answer session, Professor Robert Stavins discusses the recent international conference on climate change, and the prospects for nations to reach agreement on a plan to confront it.

Harvard researchers have concluded that omitting the adaptive ability of crops from assessments of potential damages from a warming climate could substantially overestimate losses to U.S. maize yields.

Harvard design students imagine multiple futures for a longtime New England military base.

Disaster relief dollars flowing to those affected by hurricanes like Sandy and Katrina represent an important opportunity to ensure that communities are better able to withstand the stronger storms and higher seas likely coming as climate change worsens, panelists said.

An international regulatory framework is needed to govern possible research and deployment of engineering approaches to counter climate change, an authority on environmental law says.

Hundreds of students — hackers and newcomers alike — showed off their programming chops at Monday’s CS50 Fair, a raucous exhibit of mobile apps, websites, and other projects created for Harvard’s wildly popular computer science class.

A new study finds differences in the ways that participation in Alcoholics Anonymous helps men and women maintain sobriety.

Harvard Law School Professor David Barron offered a range of ideas as he addressed the challenges presented by rising sea levels.

Two Harvard-led teams are among the 66 selected by the Department of Energy’s Advanced Research Projects Agency – Energy (ARPA-E) that will receive a total of $130 million in funding through its OPEN 2012 program, which is designed to support innovative energy technologies.

Researchers at the Wyss Institute for Biologically Inspired Engineering at Harvard University have created more than 100 3-D nanostructures using DNA building blocks that function like Lego bricks — a major advance from the two-dimensional structures the same team built a few months ago.

A new device invented at the Harvard School of Engineering and Applied Sciences (SEAS) can absorb 99.75 percent of infrared light that shines on it. When activated, it appears black to infrared cameras.

Jason Ur, the John L. Loeb Associate Professor of the Social Sciences, earlier this year launched a five-year archaeological project — the first such Harvard-led endeavor in the war-torn nation since the early 1930s — to scour a 3,200-square-kilometer region around Irbil, the capital of the Kurdish region in northern Iraq, for the signs of ancient cities and towns, canals, and roads.

Harvard University Dining Services has turned its attention to sustainable seafood, an effort that may lead to new institutional standards for purchasing.

Harvard scientist Margaret Livingstone uses works of art to explore the workings of the brain.

Scientist and Princeton University President Shirley Tilghman argued for a new approach to teaching science to college students, introducing it earlier in the learning process.

Director Ken Burns presented clips of his new documentary on the Dust Bowl at Harvard’s Boylston Hall, talking about the creative process that he uses in his films.

Harvard architecture student Jeffrey Mansfield launches a project designed to combine solar power and smartphones to protect the Amazon basin, link forest entrepreneurs, and give Amazonian people a voice in the world.

Researchers designed a chip that uses a 3-D DNA network made up of long DNA strands with repetitive sequences that — like the jellyfish tentacles — can detect, bind, and capture certain molecules.

Once its axis tilts, how does the Earth “know” to return to its normal orientation? Work by Harvard researchers provides some answers.

Superstorm Sandy’s hurricane winds and torrential downpours killed at least 106 people, left millions without power, and caused billions of dollars in damage. It also got people talking again about climate change.

Seth Stephens-Davidowitz, a Ph.D. student in economics, uses Google Insights for Search, an online tool for extracting data from the millions of daily Google searches, and then uses statistical tools to analyze the data to gain insights on who is likely to vote and on voter turnout on Election Day.

Grasp the right facts, said a renowned medical statistician, and the world is more complicated and interesting, with fewer myths that divide one region from another.

A new Harvard study says that pica — and particularly geophagy, or the eating of soil or clay — is far more prevalent in Madagascar, one of the few areas of the world where it had gone unreported, than researchers previously thought. The research also suggests that the behavior may be more prevalent worldwide, particularly among men, than earlier believed.

CfA fellow David Kipping is heading a hunt for astronomical bodies at the edge of our ability to detect them: moons circling planets in other solar systems.