My final summary report on the groupings of organisms and the people who found them during Walden Biodiversity Days in 2009 and 1998 is finished and can be downloaded here (5.7 MB). These events wouldn’t have been possible without hundreds of experts and helpers...
In the run-up to Thanksgiving this week Shannon Mullen of National Public Radio interviewed me and Martha Stewart about Oriental Bittersweet, one of the most aggressively destructive invasive plants in the North East US and a staple of holiday decorations. Not...
Sometimes you’ve got to roll up your sleeves – or pants leg – to get the job done, as I was doing to identify leeches in the Concord woods during Walden Biodiversity Day, a 24-hour bio-blitz to inventory all species that can be seen with the naked...
On July 3rd and 4th I’ll be leading the second Walden Biodiversity Day, a gathering of top naturalists and field biologists — many of whom participated in the first Biodiversity Day in 1998 — who will fan out to find, identify and photograph over a thousand...
Here are some excerpts from “Nature Sense with Peter Alden” produced by Ernie Sarro. Invasive alien plants are a major threat to America’s native plants and trees. Look for my regular segment on The Expert Series which airs on many community access...
