Pubblicato il 23/09/2012Read time: 1 min

[video:http://www.youtube.com/watch?v=nX23TuwP0tI]

Columbia University, the University of Maryland, and the Smithsonian Institution are working on visual recognition software to help identify species from photographs. Leafsnap is the first in a series of electronic field guides being developed to demonstrate this new technology.
This free mobile app helps identify tree species from photographs of their leaves. Leafsnap currently includes the trees of the Northeast and will soon grow to cover the trees of the entire continental United States.

The realization of Leafsnap was possible thanks to the collaboration between Peter Belhumeur (Columbia University), David Jacobs (University of Maryland), and John Kress (Smithsonian Institution).

[video:http://www.youtube.com/watch?v=KCpR4JTEy4c]

The high quality photographs on the website leafsnap.com and in the app were made by the the not-for-profit nature photography group Finding Species.

[video:http://www.youtube.com/watch?v=k02C7p7mQ_c]

Previews of the app:

leafsnap

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Karen Hallberg, on peace and science

di Silvia Bencivelli

Pubblicato il 13/05/2025

In a world marked by wars and global crises, the new Secretary General of Pugwash tells us about the challenges of disarmament and the value of scientific dialogue for peace (photo: Karen Hallberg, source Wikipedia).

Pugwash is the name of a Canadian fishing village and a commitment to peace. In July 1957, at the height of the Cold War, twenty-two scientists gathered here for the first Pugwash Conference on Science and World Affairs. The group was led by the mathematician and philosopher Bertrand Russell, who, two years earlier on 9 July 1955, presented the Russell and Einstein Manifesto in London's Caxton Hall. In this manifesto, the philosopher and physicist (who died in April but had signed it) called on the world to renounce war.

Name that leaf

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