A 500-foot-high sliver of the Palisades Cliff came crashing down May 12 at 7:28 p.m., jiggling our seismometer at the Lamont-Doherty Earth Observatory a few micrometers. Weighing about 10,000 tons, the rock smashed trees along the Hudson River and covered over a hiking trail, but fortunately caused no injuries.
Savraj Singh Danjal, an ecopreneur based in New Jersey, has some practical solutions for your home energy bill — and for traffic, congestion, your view of the night sky, and how to keep your coffee warm.
The U.S. Army Corps of Engineers battles an encroaching ocean, but how long will their funding hold out?
State of the Planet is a forum for discussion on varying viewpoints. The opinions expressed by the authors and those providing comments are theirs alone, and do not necessarily reflect the opinions of the Earth Institute or Columbia University.
