Stories by Amy Kraft

Why Manhattan's Green Roofs Don't Work--and How to Fix Them

City rooftops covered with vegetation are seen as a way to reduce the urban heat-island effect and cut energy usage--but so far, the results have been unimpressive

May 17, 2013 — Amy Kraft

Sustainability

Upstream Battle: Fishes Shun Modern Dam Passages, Contributing to Population Declines

A river study in the U.S. Northeast has found that many fish species are unable to use standard passageways to swim past dams on their spawning runs

February 20, 2013 — Amy Kraft